WAV decoder

WAV decoder features

• The WAV decoder implementation support the following:

• Sampling rate: 8 kHz, 11.025kHz, 16 kHz, 22.05 kHz, 32 kHz, 44.1 kHz, and 48 kHz.

• Channel: stereo and mono

• PCM format with 8/16/24 bits per sample.

Performance

Memory information

The memory usage of the decoder in bytes is:

• Code/flash = 6260 + 342 = 6602

• Data/RAM = 16 + 20696 = 20712

Section	Size
.text	6260
.ro & .const	342
.bss	20696
.data	16

CPU usage

The performance of the decoder was measured using the decoder standalone unit test.

• CPU core clock in MHz: 20.97 MHz.

Track type	Duration of track in second	Frame size in bytes	Performance MIPS of codec (in MHz)
48 kHz, stereo, PCM	12 s	4096	9.68 MHz

Following test cases were performed:

• Audio format listening test

• Audio quality test

For all above test cases, test tracks are played through the end without any distortion, glitching, hanging, or crashing.