On 9/20/18, Michael Koch wrote:
>
>>
>>> c://ffmpeg/ffmpeg -i ultrasonic.wav -f lavfi -i
>>> "sine=frequency=15000:sample_rate=48000" -filter_complex
>>>
c://ffmpeg/ffmpeg -i ultrasonic.wav -f lavfi -i
"sine=frequency=15000:sample_rate=48000" -filter_complex
Am 16.09.2018 um 22:25 schrieb Paul B Mahol:
On 9/16/18, Michael Koch wrote:
Filter inputs will be auto-converted from any non-float formats to
float or double one. Float/double formats are in [-1 .. +1] interval.
Thank you very much for the amultiply filter, it works great!
Here is an
On 9/16/18, Michael Koch wrote:
>> Filter inputs will be auto-converted from any non-float formats to
>> float or double one. Float/double formats are in [-1 .. +1] interval.
>
> Thank you very much for the amultiply filter, it works great!
>
> Here is an example for an ultrasonic converter which
Filter inputs will be auto-converted from any non-float formats to
float or double one. Float/double formats are in [-1 .. +1] interval.
Thank you very much for the amultiply filter, it works great!
Here is an example for an ultrasonic converter which downconverts the
15kHz - 25kHz band to
On Sat, Sep 15, 2018 at 2:14 PM Paul B Mahol wrote:
> On 9/15/18, Michael Koch wrote:
>
> > That's not what I mean.
> > Let's assume I want to multiply two 16-bit audio samples. The interval
> > is [-2^15 ... +2^15].
> > After multiplication the interval would be [-2^30 ... +2^30], which is
>
On 9/15/18, Michael Koch wrote:
> Am 15.09.2018 um 09:33 schrieb Gyan:
>> On Sat, Sep 15, 2018 at 12:13 PM Michael Koch
>>
>> wrote:
>>
>>> Which other filter can I use to convert the input to -1..+1 interval,
>>> and convert the output back to 16bit or 24bit interval? I saw that the
>>>
Am 15.09.2018 um 09:33 schrieb Gyan:
On Sat, Sep 15, 2018 at 12:13 PM Michael Koch
wrote:
Which other filter can I use to convert the input to -1..+1 interval,
and convert the output back to 16bit or 24bit interval? I saw that the
multiply filter in sox has these normalizations already
On Sat, Sep 15, 2018 at 12:13 PM Michael Koch
wrote:
>
> Which other filter can I use to convert the input to -1..+1 interval,
> and convert the output back to 16bit or 24bit interval? I saw that the
> multiply filter in sox has these normalizations already included.
>
The aformat filter will
yes, two inputs and one output. I think it would be best if it works
independant of bit depth. First normalize the input signals to -1...+1
range, then multiply them so that the result is also in the -1...+1
range, then normalize back to 16bit or 24bit range.
It will internally work with
On 9/12/18, Paul B Mahol wrote:
> On 9/12/18, Michael Koch wrote:
>> Am 12.09.2018 um 09:55 schrieb Paul B Mahol:
>>> Hi,
>>>
>>> On 9/12/18, Michael Koch wrote:
Is it possible to multiply audio samples from two sources?
I'd like to downconvert the 15kHz to 25kHz range to the 0 to
On 9/12/18, Michael Koch wrote:
> Am 12.09.2018 um 09:55 schrieb Paul B Mahol:
>> Hi,
>>
>> On 9/12/18, Michael Koch wrote:
>>> Is it possible to multiply audio samples from two sources?
>>> I'd like to downconvert the 15kHz to 25kHz range to the 0 to 10kHz
>>> range. First apply a strong 15kHz
Am 12.09.2018 um 09:55 schrieb Paul B Mahol:
Hi,
On 9/12/18, Michael Koch wrote:
Is it possible to multiply audio samples from two sources?
I'd like to downconvert the 15kHz to 25kHz range to the 0 to 10kHz
range. First apply a strong 15kHz highpass filter, then multiply the
signal with a
Hi,
On 9/12/18, Michael Koch wrote:
> Is it possible to multiply audio samples from two sources?
> I'd like to downconvert the 15kHz to 25kHz range to the 0 to 10kHz
> range. First apply a strong 15kHz highpass filter, then multiply the
> signal with a 15kHz sine wave (which produces sum and
Is it possible to multiply audio samples from two sources?
I'd like to downconvert the 15kHz to 25kHz range to the 0 to 10kHz
range. First apply a strong 15kHz highpass filter, then multiply the
signal with a 15kHz sine wave (which produces sum and difference
signals), then apply a 10kHz
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