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The new sample sounds awesome - I hope you will have enough space for the rest?

Chris

Surprisingly enough, the new samples:

• Battlestations - 990 bytes (the packed data)
• Blast Off - 1243 bytes

used less space overall (2233) than the placeholder samples (2405):

• Battlestations - 1335 bytes
• Blast Off - 1070 bytes

What are the sample rates/bit depth targets you're aiming for? Wondering if some of my audio engineer cohorts at work might have some nifty method of downsampling.

4 bits per sample. The CDF playback rates that iesposta is currently using for those two samples are:

• Battlestations - 95000
• Blast Off - 110000

Though I don't know what those would be when translated to Hz.

Nathan: Both are less than 4000Hz.

I always used 4000Hz as a minimum, but wanted to try less.

"Blast off" at 4000Hz (packed) was around 1832 bytes.

This new sample is 1243 bytes. That 600 bytes smaller. What I did was decrease the duration, which increased the frequency (sounds like chipmunk).

 

Things really start to artifact when going lower, except if the sample is very low like "battle stations". Then it can take a very low rate and still sound good.

It's the mid-range and highs that start to artifact when the playback rate drops very low.

What I intended to do was to make the arcade sample play back a little faster but sound the same. I haven't had success doing that. The shorter I make the sample, the more "chipmunk" it sounds.

 

I was surprised that the playback through emulation sounds noticeably poor, but on real hardware during game play it sounds awesome.

 

I watched a video of the Atari 8-Bit Bosconian, and this 2600 version is already better IMHO.