Hi! I'm the guy who wanted to build D-class amplifier... I've diecided to use DS87C550 microcontroller as a heart of my circuit. It has built-in 10bit AD conventer.
I was thinking about sending values of voltage building output sound (sound samples) to parallel port and then directly to microcontroller. Those samples could be sent as two 8-bit data, so the sound could have 16-bit quality. What it could give to us? -It could be possible to use my circuit as 16-bit digital "covox"... -It would not be necessary to have an audio card in pc -This device could be used with any platform using ALSA -It would not be necessary to take sound from audio card's output. All cheap cards use cheap amplifiers with big distorsions... So I have question - is there already such function in ALSA, that redirect/copy data from /dev/dsp to parallel port? If there isnt - is it enough link dsp device with parallel port device, or to send audio data directly to parallel port? I suppose, that it would be good to send audio samples with sound frequency (44100Hz). What to do to change 10-bit sound to 16-bit sound? Just multiply 10-bit samples with 63? Thanks! CeDeROM _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
