The following output was generated by /test/patest_converters.c on 12/3/2007. Note that the dBfs values should be taken with a grain of salt because the asymmetrical scaling used by PortAudio changes the values from those expected.
The most important thing to note is that those conversions marked with X are not implemented at all. The others seem to be working more-or-less OK although some analysis should be performed to understand the noise floor deviation from expected values.
Sine wave in, something out
flags = paNoFlag
Output contains non-zero data
Key: . - pass, X - fail
in| out: f32 i32 i24 i16 i8 ui8 f32 . . . . . X i32 . . X . . X i24 . . . X X X i16 . . . . X X i8 . . . . . . ui8 . . . . . .
Combined dynamic range (src->dest->float32)
Key: Noise amplitude in dBfs, X - fail (either above failed or dest->float32 failed)
in| out: f32 i32 i24 i16 i8 ui8 f32 -1.$ -180.6 -138.5 -79.5 -31.5 X i32 -144.5 -144.5 X -86.1 -42.1 X i24 -138.5 -138.5 -138.5 X X X i16 -84.8 -84.8 -84.8 -84.8 X X i8 -36.6 -36.6 -36.6 -36.6 -36.6 -36.6 ui8 -36.4 -36.4 -36.4 -36.4 -36.4 -36.4
flags = paClipOff
Output contains non-zero data
Key: . - pass, X - fail
in| out: f32 i32 i24 i16 i8 ui8 f32 . . . . . X i32 . . X . . X i24 . . . X X X i16 . . . . X X i8 . . . . . . ui8 . . . . . .
Combined dynamic range (src->dest->float32)
Key: Noise amplitude in dBfs, X - fail (either above failed or dest->float32 failed)
in| out: f32 i32 i24 i16 i8 ui8 f32 -1.$ -180.6 -138.5 -80.1 -31.3 X i32 -144.5 -144.5 X -85.4 -42.1 X i24 -138.5 -138.5 -138.5 X X X i16 -84.8 -84.8 -84.8 -84.8 X X i8 -36.6 -36.6 -36.6 -36.6 -36.6 -36.6 ui8 -36.4 -36.4 -36.4 -36.4 -36.4 -36.4
flags = paDitherOff
Output contains non-zero data
Key: . - pass, X - fail
in| out: f32 i32 i24 i16 i8 ui8 f32 . . . . . X i32 . . . . . . i24 . . . . . . i16 . . . . . . i8 . . . . . . ui8 . . . . . .
Combined dynamic range (src->dest->float32)
Key: Noise amplitude in dBfs, X - fail (either above failed or dest->float32 failed)
in| out: f32 i32 i24 i16 i8 ui8 f32 -1.$ -187.2 -138.7 -84.8 -36.6 X i32 -144.5 -144.5 -138.5 -90.3 -42.1 -42.1 i24 -138.5 -138.5 -138.5 -90.3 -42.1 -42.1 i16 -84.8 -84.8 -84.8 -84.8 -42.1 -42.1 i8 -36.6 -36.6 -36.6 -36.6 -36.6 -36.6 ui8 -36.4 -36.4 -36.4 -36.4 -36.4 -36.4
flags = paClipOff | paDitherOff
Output contains non-zero data
Key: . - pass, X - fail
in| out: f32 i32 i24 i16 i8 ui8 f32 . . . . . . i32 . . . . . . i24 . . . . . . i16 . . . . . . i8 . . . . . . ui8 . . . . . .
Combined dynamic range (src->dest->float32)
Key: Noise amplitude in dBfs, X - fail (either above failed or dest->float32 failed)
in| out: f32 i32 i24 i16 i8 ui8 f32 -1.$ -187.2 -138.7 -84.8 -36.6 -36.6 i32 -144.5 -144.5 -138.5 -90.3 -42.1 -42.1 i24 -138.5 -138.5 -138.5 -90.3 -42.1 -42.1 i16 -84.8 -84.8 -84.8 -84.8 -42.1 -42.1 i8 -36.6 -36.6 -36.6 -36.6 -36.6 -36.6 ui8 -36.4 -36.4 -36.4 -36.4 -36.4 -36.4
