[linux-audio-dev] pysndfile, pyrtaudio, pyrtmidi, pysoundtouch

2006-04-01 Thread Patrick Stinson
I just finished writing python bindings for libsndfile if anyone is interested. I only wrapped the functions I needed to read files, but I could reasily finish the wrapper in a couple of hours if anyone is interested. unit tests are included. That makes the following python extensions available on

[linux-audio-dev] libsndfile: sf_seek return value

2006-04-01 Thread Patrick Stinson
has anyone seek sf_seek return zero on success instead of the frame offset from the start of the audio data, as it says in the API docs? The seek appears to work because a call to read behaves correctly at the end of the stream afterwards. Thanks.

Re: [linux-audio-dev] linear resampling is crap ? (was: fast linear resampling on ARM - suggestions?)

2006-04-01 Thread torbenh
On Sat, Apr 01, 2006 at 10:49:20AM +0100, Simon Jenkins wrote: > On Thu, 2006-03-30 at 22:33 +0200, [EMAIL PROTECTED] wrote: > > > i need all features of libsrc (slowly changing samplerate, and resample > > factors of 1.1 or so) > > Lets assume - unrealistically, but for the convenience of th

Re: [linux-audio-dev] linear resampling is crap ? (was: fast linear resampling on ARM - suggestions?)

2006-04-01 Thread Erik de Castro Lopo
Stefan Westerfeld wrote: > First algorithm: upsample by factor 2 (you can use my code as it is), > then use linear interpolation. Why this is better than plain linear > interpolation? Because low frequency signals can be better approximated > by lines than high frequency signals, and after upsampl

Re: [linux-audio-dev] linear resampling is crap ? (was: fast linear resampling on ARM - suggestions?)

2006-04-01 Thread Stefan Westerfeld
Hi! On Thu, Mar 30, 2006 at 10:33:58PM +0200, [EMAIL PROTECTED] wrote: > i cant use a 2 times upsampler > i want to use an unsynced soundcard with clockdrift as a recording > source. and i really dont want to make any quality compromises. > > i need all features of libsrc (slowly changing

Re: [linux-audio-dev] linear resampling is crap ? (was: fast linear resampling on ARM - suggestions?)

2006-04-01 Thread Simon Jenkins
On Thu, 2006-03-30 at 22:33 +0200, [EMAIL PROTECTED] wrote: > i need all features of libsrc (slowly changing samplerate, and resample > factors of 1.1 or so) Lets assume - unrealistically, but for the convenience of the maths - a sample rate of 50kHz and a buffer size of 1000. Your resample f