diff options
Diffstat (limited to 'posts/2013-08-11-hacking-the-wavedrum.markdown')
| -rw-r--r-- | posts/2013-08-11-hacking-the-wavedrum.markdown | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/posts/2013-08-11-hacking-the-wavedrum.markdown b/posts/2013-08-11-hacking-the-wavedrum.markdown index aafd1a6..4b53d77 100644 --- a/posts/2013-08-11-hacking-the-wavedrum.markdown +++ b/posts/2013-08-11-hacking-the-wavedrum.markdown @@ -232,17 +232,22 @@ yet, but you can listen to the clearly recognisable loop patterns with find LOOP -name "*.BIN" -print |\ xargs -I XXX \ - play -t raw -r 48k -b 32 -e unsigned-integer -c 2 XXX speed 0.3 - -Obviously, this isn't quite correct. I'm interpreting every 32 bits -as a sample in unsigned integer format, but assuming a sample rate of -48kHz and two channel output results in extremely fast playback which -I then artificially slow down again. This really is the same effect -as playing back the data at a lower sample rate. Even at the correct -speed, the sound is distorted and far from the realistic instrument -sound when playing back the loops through the Wavedrum. Clearly, more -work is required to figure out the correct format. Once this is -understood we could use custom loops with the Wavedrum. + play -t raw -r 44.1k -b 16 -e signed-integer -c 1 XXX + +Obviously, this isn't quite correct. I'm interpreting every 16 bits +as a sample in signed integer format, but the sound is distorted and +far from the realistic instrument sound when playing back the loops +through the Wavedrum. + +All loops start with this 44 byte long header: + + 04 dc 10 d3 __ __ __ 95 01 d4 00 d0 30 f8 22 b5 + 46 95 56 95 57 95 57 95 d6 2e 56 95 56 e2 57 95 + 54 95 46 95 32 f4 22 f4 __ __ __ 95 + +Clearly, more work is required to figure out the complete format of +these loop files. Once this is understood we could use custom loops +with the Wavedrum. The raw audio data in `WD2_DATA.BOR` suffers from the same problems. Although the data can be interpreted as raw audio, the sound is |