C/C++ library for .wav file encoding

Question

I need a library for MS VC6 which encodes sampled data which is in the form of a float array, to an audio file format preferably wav Also is there a library that can encode the samples into pcm form and play it directly through the sound card without saving a wav file first??

duplicate: http://stackoverflow.com/questions/1451606/programably-make-and-play-a-sound-through-speakers-c — Georg Fritzsche, Nov 30 '09 at 13:35

score 4 · Answer 1 · edited Jul 29 '11 at 19:19

4

It looks like libsndfile (www.mega-nerd.com/libsndfile/) and SndLib (ccrma.stanford.edu/software/snd/sndlib/) will do what you want.

edited Jul 29 '11 at 19:19

Emile Cormier

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answered Dec 30 '09 at 17:26

Larry Engholm

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score 2 · Accepted Answer · answered Dec 01 '09 at 06:43

As noted, the WAV file format is very simple. To just play the samples, use the waveOut functions; they're documented.

To convert from a float to a signed 16-bit PCM sample, just convert the sample into the 16 bit range. For example, assuming a sample in the range -1.0 to +1.0 multiply by 32767.0 and convert to an integer:

int16_t sample = static_cast<int16_t>(32767.0 * float_sample);

Once you have those, just use the waveOut* functions to play the samples.

C/C++ library for .wav file encoding

2 Answers2