[TI-H] Re: [A83] new program

To: <ti-hardware@lists.ticalc.org>
Subject: [TI-H] Re: [A83] new program
From: "Gijs Leegwater" <g_leegwater@hotmail.com>
Date: Tue, 7 May 2002 00:30:17 +0200
References: <KOEAJNCENFHMBALFAJBOIEIPCEAA.zaphod@coe.neu.edu> <000601c1f52f$c09d8020$080a0a0a@ronald>
Reply-To: ti-hardware@lists.ticalc.org


> Playwav worked too, so why shouldn't this be possible?

Playwav uses 'pulse modulation', a method to emulate wave-sound with only
square waves. Each sample is converted to a piece of square wave like this:
a high amplitude sample is converted to ---------_ a low amplitude
to -________ a middle amplitude to -----______ etc. a 4-bit 11,025 KHz is
actually converted to a 1 -bit 44,1 Khz. But when the mic input is roughly
converted to 11,025 HZ 1-bit man that sux

Bye
Cheiz

References:

[TI-H] Re: [A83] new program

From: "Nick" <zaphod@coe.neu.edu>

[TI-H] Re: [A83] new program

From: "Ronald Teune" <rtwolf@gmx.net>