Re: [M100] Audacity
Yep, that's the guy. I have a couple of those cables from him and they work on my Model 1's, 100/102, and cocos. On Oct 6, 2018 8:01 AM, "Jesus R" wrote: I just bypassed the Tandy cassette cable with jumpers for a quick test. I found this on ebay: https://www.ebay.ie/itm/Amstrad-CPC-6128-Dragon-32-64-IBM-5150-High-Quality-Cassette-Tape-Leads-Cable-/250903444573 Jesus R - What do you mean by "bypass" or "bypass cable"? There is at least one guy making and selling new standard cassette cables. (sold as ibm 5150 cassette cables, but it's the same for Model 1, 100, and coco) Do you mean an audio transformer?
Re: [M100] Audacity
What do you mean by "bypass" or "bypass cable"? There is at least one guy making and selling new standard cassette cables. (sold as ibm 5150 cassette cables, but it's the same for Model 1, 100, and coco) Do you mean an audio transformer? -- bkw On Fri, Oct 5, 2018, 7:33 PM Jesus R wrote: > This week I have been working with Stephen off line to find the "issue". > At first I didn't think there was an "issue", but Stephen rightfully stuck > to his conviction and made me curious. Two computers, two Audacity, T100, > T200, Logitech A/D, and PS Audio A/D where all systematically tested and > nothing would produce a square wave. Since the only thing left to check was > the cable I made a curd bypass and BAM square wave at last. I'm going to > make a cable today to continue with the archive operation, but is anyone > making a new cable? > > Jesus R >
Re: [M100] Audacity
> 6. I use LINE IN for sampling and LINE OUT for playback on the PC. > Isn't the answer to the "needs more swing" problem just use the headphone out instead of the line out? Just like on the actual cassette player. This also makes the discrepency about hooking two M100's to each other not working into no mystery at all. It would be entirely expected, if the m100 outputs line level, but expects input from an earphone jack. It does mean that in modern times you would still have to "play with volume settings to get it to work", just like in the olden days, because the exact levels coming out of headphone jacks is never predictable or the same from one device to the next. Did anyone ever make a volume calibrator test tape? I'm imagining a tape with a refence signal on it, (or a program could generate the test signsl and you could record it yourself) and a util that runs on the m100 that listens on the cassette port continuously, while you play the special test-pattern tape and turn the volume up and down. The util would listen and do very simple analysis in real time and update the display to let you find the perfect volume level for your tape drive. Not merely a level that works, but the center of the range that would work for most commercial tapes, and the safest from corrupt reads. -- bkw >
Re: [M100] Audacity
Oh ok :-) Thanks, -- John. On Fri, Oct 5, 2018, 5:10 PM Jesus R wrote: > crude >
Re: [M100] Audacity
Perhaps you meant "crude" bypass? Ken On 10/5/18 4:55 PM, John Gardner wrote: "8) On 10/5/18, John R. Hogerhuis wrote: What's a curd bypass? Google sends me to weight watchers. On Fri, Oct 5, 2018, 4:33 PM Jesus R wrote: This week I have been working with Stephen off line to find the "issue". At first I didn't think there was an "issue", but Stephen rightfully stuck to his conviction and made me curious. Two computers, two Audacity, T100, T200, Logitech A/D, and PS Audio A/D where all systematically tested and nothing would produce a square wave. Since the only thing left to check was the cable I made a curd bypass and BAM square wave at last. I'm going to make a cable today to continue with the archive operation, but is anyone making a new cable? Jesus R
Re: [M100] Audacity
"8) On 10/5/18, John R. Hogerhuis wrote: > What's a curd bypass? Google sends me to weight watchers. > > On Fri, Oct 5, 2018, 4:33 PM Jesus R wrote: > >> This week I have been working with Stephen off line to find the "issue". >> At first I didn't think there was an "issue", but Stephen rightfully >> stuck >> to his conviction and made me curious. Two computers, two Audacity, T100, >> T200, Logitech A/D, and PS Audio A/D where all systematically tested and >> nothing would produce a square wave. Since the only thing left to check >> was >> the cable I made a curd bypass and BAM square wave at last. I'm going to >> make a cable today to continue with the archive operation, but is anyone >> making a new cable? >> >> Jesus R >> >
Re: [M100] Audacity
What's a curd bypass? Google sends me to weight watchers. On Fri, Oct 5, 2018, 4:33 PM Jesus R wrote: > This week I have been working with Stephen off line to find the "issue". > At first I didn't think there was an "issue", but Stephen rightfully stuck > to his conviction and made me curious. Two computers, two Audacity, T100, > T200, Logitech A/D, and PS Audio A/D where all systematically tested and > nothing would produce a square wave. Since the only thing left to check was > the cable I made a curd bypass and BAM square wave at last. I'm going to > make a cable today to continue with the archive operation, but is anyone > making a new cable? > > Jesus R >
Re: [M100] Audacity
Once I had a process down i was able to repeatably make mp3 files that played from an iPhone 6 using audacity and a that Thinkpad laptop. Using a dedicated TASCAM recording device was easier and reliable but those are expensive. My only problem is I didn't have much use for it. It's cool to be able to bootstrap TEENY but other than that it's generally easier for me to use REX + TSDOS + laddiealpha. -- John. On Mon, Oct 1, 2018, 6:51 PM Stephen Adolph wrote: > This subject always interests me. But it is frustrating. > > I've been playing around with the files on Sonora.us. awesome effort to > put that together! I do have some comments though. > > 1. The audio files don't work for me in any scenario so far. I believe > that at least some of them are distorted. I have not looked at them all. > When I compare the signals generated by an m100 to the audio files using a > scope there is a really big difference. > > 2. As an aside I found that my pc audio output had a DC offset! That was > really hard to work with. I has to make a cable with a series capacitor to > get the setup to work at all > > 3. Once I obtained *good* sample files, the number one determinant of a > successful readback is drive signal level . Only my PC seems to be able to > generate enough swing. > > 4. Wav vs mp3. Both are usable. Once all the issues have been sorted > these two file types seem to work equally well. Mp3 a lot smaller!! > > 5. T200 is pretty robust and not sensitive to volume that much. T102 > seems to be more sensitive while m100 seems on the edge of working at all. > Maybe it is specific to my machines. All the circuits are the same on the > schematic so I have no explanation. > > 6. I use LINE IN for sampling and LINE OUT for playback on the PC. > > 7. I amplify the sample files to maximum in the audacity effects menu. > > 8. None of my portable devices Samsung s8 old Sony expedia nor my mp3 > player have enough drive signal to be reliable. > > > I hate to say it but i believe that the files on the site may need to be > resampled. I think the approach of sharing the files over the net is fine > but the audio files should look like a low pass filtered square wave. I > can send traces of M100 actual output of anyone is interested. > > Anyhow that is where I got to. I still don't have a reliable working > portable solution for cassette audio. > > Anyone out there having a different experience? > > > Steve > > >
Re: [M100] Audacity
Kurt"held recorder in SHQ more (192kb mp3) works every time for me." THAT is the equation! A minimum of 192k for MP3 files. From: M100 on behalf of Stephen Adolph Sent: Tuesday, October 2, 2018 2:52 AM To: m...@bitchin100.com Subject: Re: [M100] Audacity Waveform looks good and similar to mine. However Not at max signal swing. I may have to boost it. On Monday, October 1, 2018, Stephen Adolph mailto:twospru...@gmail.com>> wrote: Thanks. I will check that out and compare to my waveforms. On Monday, October 1, 2018, Kurt McCullum mailto:ku...@fastmail.com>> wrote: Sony ICD-PX333 hand held recorder in SHQ more (192kb mp3) works every time for me. In fact I gave up trying to record with my PC because I had so many issues. I've also used an older 720 model and it worked just as well. I could never get my PC to stop messing with the audio when I tried to record. I'm sure there is a way to do it but I gave up and used the voice recorder once I realized I was getting 100% reliability with it. I don't use it much any more but I always have it in my bag when I travel, just in case. There are a couple of files that I put up in the members file area if you want to test the playback on your PC or phone. Ram version of TS-DOS 100/102 www.club100.org/memfiles/index.php?action=downloadfile=DOS100.CO.MP3=Kurt%20McCullum&<http://www.club100.org/memfiles/index.php?action=downloadfile=DOS100.CO.MP3=Kurt%20McCullum;> Time Minder for the 200 www.club100.org/memfiles/index.php?action=downloadfile=TMX.CO.MP3=Kurt%20McCullum/Time%20Minder&<http://www.club100.org/memfiles/index.php?action=downloadfile=TMX.CO.MP3=Kurt%20McCullum/Time%20Minder;> I've played them back on a PC and they worked fine but most of the time I play them back on the Sony. Max volume. Kurt On Mon, Oct 1, 2018, at 6:51 PM, Stephen Adolph wrote: This subject always interests me. But it is frustrating. I've been playing around with the files on Sonora.us. awesome effort to put that together! I do have some comments though. 1. The audio files don't work for me in any scenario so far. I believe that at least some of them are distorted. I have not looked at them all. When I compare the signals generated by an m100 to the audio files using a scope there is a really big difference. 2. As an aside I found that my pc audio output had a DC offset! That was really hard to work with. I has to make a cable with a series capacitor to get the setup to work at all 3. Once I obtained *good* sample files, the number one determinant of a successful readback is drive signal level . Only my PC seems to be able to generate enough swing. 4. Wav vs mp3. Both are usable. Once all the issues have been sorted these two file types seem to work equally well. Mp3 a lot smaller!! 5. T200 is pretty robust and not sensitive to volume that much. T102 seems to be more sensitive while m100 seems on the edge of working at all. Maybe it is specific to my machines. All the circuits are the same on the schematic so I have no explanation. 6. I use LINE IN for sampling and LINE OUT for playback on the PC. 7. I amplify the sample files to maximum in the audacity effects menu. 8. None of my portable devices Samsung s8 old Sony expedia nor my mp3 player have enough drive signal to be reliable. I hate to say it but i believe that the files on the site may need to be resampled. I think the approach of sharing the files over the net is fine but the audio files should look like a low pass filtered square wave. I can send traces of M100 actual output of anyone is interested. Anyhow that is where I got to. I still don't have a reliable working portable solution for cassette audio. Anyone out there having a different experience? Steve
Re: [M100] Audacity
Waveform looks good and similar to mine. However Not at max signal swing. I may have to boost it. On Monday, October 1, 2018, Stephen Adolph wrote: > Thanks. I will check that out and compare to my waveforms. > > On Monday, October 1, 2018, Kurt McCullum wrote: > >> Sony ICD-PX333 hand held recorder in SHQ more (192kb mp3) works every >> time for me. In fact I gave up trying to record with my PC because I had so >> many issues. I've also used an older 720 model and it worked just as well. >> I could never get my PC to stop messing with the audio when I tried to >> record. I'm sure there is a way to do it but I gave up and used the voice >> recorder once I realized I was getting 100% reliability with it. I don't >> use it much any more but I always have it in my bag when I travel, just in >> case. >> >> There are a couple of files that I put up in the members file area if you >> want to test the playback on your PC or phone. >> >> Ram version of TS-DOS 100/102 >> www.club100.org/memfiles/index.php?action=downloadfile >> name=DOS100.CO.MP3=Kurt%20McCullum& >> >> Time Minder for the 200 >> www.club100.org/memfiles/index.php?action=downloadfile >> ame=TMX.CO.MP3=Kurt%20McCullum/Time%20Minder& >> >> I've played them back on a PC and they worked fine but most of the time I >> play them back on the Sony. Max volume. >> >> Kurt >> >> >> On Mon, Oct 1, 2018, at 6:51 PM, Stephen Adolph wrote: >> >> This subject always interests me. But it is frustrating. >> >> I've been playing around with the files on Sonora.us. awesome effort to >> put that together! I do have some comments though. >> >> 1. The audio files don't work for me in any scenario so far. I believe >> that at least some of them are distorted. I have not looked at them all. >> When I compare the signals generated by an m100 to the audio files using a >> scope there is a really big difference. >> >> 2. As an aside I found that my pc audio output had a DC offset! That >> was really hard to work with. I has to make a cable with a series >> capacitor to get the setup to work at all >> >> 3. Once I obtained *good* sample files, the number one determinant of a >> successful readback is drive signal level . Only my PC seems to be able to >> generate enough swing. >> >> 4. Wav vs mp3. Both are usable. Once all the issues have been sorted >> these two file types seem to work equally well. Mp3 a lot smaller!! >> >> 5. T200 is pretty robust and not sensitive to volume that much. T102 >> seems to be more sensitive while m100 seems on the edge of working at all. >> Maybe it is specific to my machines. All the circuits are the same on the >> schematic so I have no explanation. >> >> 6. I use LINE IN for sampling and LINE OUT for playback on the PC. >> >> 7. I amplify the sample files to maximum in the audacity effects menu. >> >> 8. None of my portable devices Samsung s8 old Sony expedia nor my mp3 >> player have enough drive signal to be reliable. >> >> >> I hate to say it but i believe that the files on the site may need to be >> resampled. I think the approach of sharing the files over the net is fine >> but the audio files should look like a low pass filtered square wave. I >> can send traces of M100 actual output of anyone is interested. >> >> Anyhow that is where I got to. I still don't have a reliable working >> portable solution for cassette audio. >> >> Anyone out there having a different experience? >> >> >> Steve >> >> >> >>
Re: [M100] Audacity
Thanks. I will check that out and compare to my waveforms. On Monday, October 1, 2018, Kurt McCullum wrote: > Sony ICD-PX333 hand held recorder in SHQ more (192kb mp3) works every time > for me. In fact I gave up trying to record with my PC because I had so many > issues. I've also used an older 720 model and it worked just as well. I > could never get my PC to stop messing with the audio when I tried to > record. I'm sure there is a way to do it but I gave up and used the voice > recorder once I realized I was getting 100% reliability with it. I don't > use it much any more but I always have it in my bag when I travel, just in > case. > > There are a couple of files that I put up in the members file area if you > want to test the playback on your PC or phone. > > Ram version of TS-DOS 100/102 > www.club100.org/memfiles/index.php?action=downloadfile& > filename=DOS100.CO.MP3=Kurt%20McCullum& > > Time Minder for the 200 > www.club100.org/memfiles/index.php?action=downloadfile& > filename=TMX.CO.MP3=Kurt%20McCullum/Time%20Minder& > > I've played them back on a PC and they worked fine but most of the time I > play them back on the Sony. Max volume. > > Kurt > > > On Mon, Oct 1, 2018, at 6:51 PM, Stephen Adolph wrote: > > This subject always interests me. But it is frustrating. > > I've been playing around with the files on Sonora.us. awesome effort to > put that together! I do have some comments though. > > 1. The audio files don't work for me in any scenario so far. I believe > that at least some of them are distorted. I have not looked at them all. > When I compare the signals generated by an m100 to the audio files using a > scope there is a really big difference. > > 2. As an aside I found that my pc audio output had a DC offset! That was > really hard to work with. I has to make a cable with a series capacitor to > get the setup to work at all > > 3. Once I obtained *good* sample files, the number one determinant of a > successful readback is drive signal level . Only my PC seems to be able to > generate enough swing. > > 4. Wav vs mp3. Both are usable. Once all the issues have been sorted > these two file types seem to work equally well. Mp3 a lot smaller!! > > 5. T200 is pretty robust and not sensitive to volume that much. T102 > seems to be more sensitive while m100 seems on the edge of working at all. > Maybe it is specific to my machines. All the circuits are the same on the > schematic so I have no explanation. > > 6. I use LINE IN for sampling and LINE OUT for playback on the PC. > > 7. I amplify the sample files to maximum in the audacity effects menu. > > 8. None of my portable devices Samsung s8 old Sony expedia nor my mp3 > player have enough drive signal to be reliable. > > > I hate to say it but i believe that the files on the site may need to be > resampled. I think the approach of sharing the files over the net is fine > but the audio files should look like a low pass filtered square wave. I > can send traces of M100 actual output of anyone is interested. > > Anyhow that is where I got to. I still don't have a reliable working > portable solution for cassette audio. > > Anyone out there having a different experience? > > > Steve > > > >
Re: [M100] Audacity
Sony ICD-PX333 hand held recorder in SHQ more (192kb mp3) works every time for me. In fact I gave up trying to record with my PC because I had so many issues. I've also used an older 720 model and it worked just as well. I could never get my PC to stop messing with the audio when I tried to record. I'm sure there is a way to do it but I gave up and used the voice recorder once I realized I was getting 100% reliability with it. I don't use it much any more but I always have it in my bag when I travel, just in case. There are a couple of files that I put up in the members file area if you want to test the playback on your PC or phone. Ram version of TS-DOS 100/102 www.club100.org/memfiles/index.php?action=downloadfile=DOS100- .CO.MP3=Kurt%20McCullum& Time Minder for the 200 www.club100.org/memfiles/index.php?action=downloadfile=TMX.CO.- MP3=Kurt%20McCullum/Time%20Minder& I've played them back on a PC and they worked fine but most of the time I play them back on the Sony. Max volume. Kurt On Mon, Oct 1, 2018, at 6:51 PM, Stephen Adolph wrote: > This subject always interests me. But it is frustrating. > > I've been playing around with the files on Sonora.us. awesome effort > to put that together! I do have some comments though.> > 1. The audio files don't work for me in any scenario so far. I > believe that at least some of them are distorted. I have not > looked at them all. When I compare the signals generated by an > m100 to the audio files using a scope there is a really big > difference.> > 2. As an aside I found that my pc audio output had a DC offset! That > was really hard to work with. I has to make a cable with a series > capacitor to get the setup to work at all> > 3. Once I obtained *good* sample files, the number one determinant of > a successful readback is drive signal level . Only my PC seems to > be able to generate enough swing.> > 4. Wav vs mp3. Both are usable. Once all the issues have been > sorted these two file types seem to work equally well. Mp3 a lot > smaller!!> > 5. T200 is pretty robust and not sensitive to volume that much. T102 > seems to be more sensitive while m100 seems on the edge of working > at all. Maybe it is specific to my machines. All the circuits > are the same on the schematic so I have no explanation.> > 6. I use LINE IN for sampling and LINE OUT for playback on the PC. > > 7. I amplify the sample files to maximum in the audacity effects > menu.> > 8. None of my portable devices Samsung s8 old Sony expedia nor my > mp3 player have enough drive signal to be reliable.> > > I hate to say it but i believe that the files on the site may need to > be resampled. I think the approach of sharing the files over the net > is fine but the audio files should look like a low pass filtered > square wave. I can send traces of M100 actual output of anyone is > interested.> > Anyhow that is where I got to. I still don't have a reliable working > portable solution for cassette audio.> > Anyone out there having a different experience? > > > Steve > >
