From: cr88192@gmail.com
On 9/12/2025 1:58 PM, MitchAlsup wrote:
>
> David Schultz posted:
>
>> On 9/12/25 12:01 PM, George Neuner wrote:
>>> You are forgetting the lower harmonics. If it is true about 3 lower,
>>> then ~1/3 of notes on the piano will include an overtone that is below
>>> the (average) hearing threshold.
>>
>> One of the coolest things I ever heard, felt really, were the beat tones
>> between a couple of peddle notes on the pipe organ at the Meyerson in
>> Dallas.
>
> Have you listened to a helicopter-style sub-woofer ??
>
> Generally housed between stories in a building--a helicopter arranged set
> of blades, that can go all the way down to 0 Hz--and up to about 30 Hz.
> The low frequency components adjust the pitch of the blades through the
> cyclic.
Main subwoofers I am aware of/had seen:
Large plastic-cone speakers;
Seemingly, the relative rigidity of a plastic cone works well here.
Large solenoid driving a big/heavy weight (such as a big chunk of
steel), which is then bolted down to something (presumably, the surface
of whatever it is bolted to serving a similar role to the speaker cone).
well, in other news, have slightly improved the quality of my new
experimental audio compressor at 6 kbps, but it is still pretty bad.
Seems my previous attempt (that I had posted online) was suffering from
32-bit truncation in the pattern table (some stuff was happening with
'int' that should have been with 'unsigned long long'; which was
negatively effecting audio quality).
...
TODO: Might still be worth testing it out at 32kHz / 24kbps, and see how
it compares against low bitrate MP3. If it doesn't sound completely
awful, might be OK (only reason I think it may stand a chance is because
of how terrible MP3 sounds at these sorts of bitrates).
At 16kHz (and 12kbps), does sound a bit better, though audio quality is
still inferior at present to 8000 2-bit ADPCM (16kbps).
...
--- SoupGate-Win32 v1.05
* Origin: you cannot sedate... all the things you hate (1:229/2)
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