gregb wrote: > The recent discussion about frame size and sync troubleshooting makes me > wonder about the how other system integrators convince themselves of > implementation correctness. Are there tools to build a deterministic > "bit perfect" data stream in WAV format, compare the output of a S/PDIF > data stream for correctness, and then compare the output from a DAC for > correctness? Perhaps a WAV truth file of exactly 1 second at 20KHz, then > decrementing by 500 Hz every second may define a truth data set.
For 16/44.1 There is two indirect test that works very well . Encode a DTS or AC3 stream as PCM and make it as a WAV or FLAC file . Or rip a HDCD disc and use a hdcd capable dac . In both cases volume must bee 100% ( obviously ) and no use of smart gain ( obviously ). In the case of dts a or ac3 stream the thing LMS and the touch think is a 2ch "PCM" is in reality an encoded bitstream your ht receiver will recognise as such and decode . If the bit pattern is mixed up the decoder will only produce white noise so it's all of nothing :) . I guess a similar scenario is valid for hdcd , spud anomalies and the hdcd indicator flickering on the dac. I did this with my normal setup ( not wand or squeezelite ) downloaded a dts track as WAV burnt it as cd track on a disc ripped it with my normal software and do my usuall tag editing etc and played it and it worked so I was able to test the whole chain from ripping to playback . ------------------------------------------------------------------------ Mnyb's Profile: http://forums.slimdevices.com/member.php?userid=4143 View this thread: http://forums.slimdevices.com/showthread.php?t=98544 _______________________________________________ unix mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/unix
