#42 Low sound quality on high-pitched sounds and noise waves

[Anonymous]

The quality is bad in high pithced sounds, narrow
pulses and especially the noise waveforms, which sounds
like it has plays 1 octave lower. An example tune with
some large scale sounds,
hvsids-5.3/various/a-f/Agemixer/Tarzan-lento.sid

My versions are Sidplay V2.0.8, Libsidplay V2.1.0.
Linux. Sound Blaster 128 (es1371 driver).

I have used an option sidplay2 -f88200 Tarzan-lento.sid
to double the frequency, but the higher voices still
choke, as one can imagine 44100 Hz should give a CD
quality. It sounds like a bug in the playback frequency
set.

agespam@japo.fi Subject: C64 mail

[Simon White]

Logged In: YES
user_id=59929

Sidplay2 used a fast sampling method that can have some side
effects in ReSIDs internal filters. In sidplay2 2.0.9 I've
added the option to clock ReSID in a non optimised way, but
results in about 3 times the amount of cpu usage. If your
building sidplay2 please give the latest code a try and pass
the -O0 option on the command line and see what the results
are like for you. If there ok I will close this bug.

If your cpu is not upto it then you can use the -w option to
generate a wav file.