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Re: [Qemu-devel] [PATCH] PC speaker emulation (square wave)
From: |
Jamie Lokier |
Subject: |
Re: [Qemu-devel] [PATCH] PC speaker emulation (square wave) |
Date: |
Thu, 26 Jan 2006 04:50:43 +0000 |
User-agent: |
Mutt/1.4.1i |
Joachim Henke wrote:
> Ok, I simplified my patch to generate just plain square waves.
> Indeed, its sound is much closer to a real PC speaker now.
>
> Does "cut off frequency" mean, that we have silence above that
> specific frequency? I changed my patch to go this way. Before, it
> always played the highest possible frequency for that case (f > 16 kHz).
No, it means the higher-frequency harmonic components of the square
wave are attenuated, which affects how it sounds. Filtering a square
wave in this way is particularly simple, but unlikely to be worth the
effort.
-- Jamie
- Re: [Qemu-devel] [PATCH] PC speaker emulation (fixed), (continued)
- Re: [Qemu-devel] [PATCH] PC speaker emulation (fixed), Sebastian Kaliszewski, 2006/01/20
- [Qemu-devel] [PATCH] PC speaker emulation (fixed point), Joachim Henke, 2006/01/23
- Re: [Qemu-devel] [PATCH] PC speaker emulation (fixed point), Sebastian Kaliszewski, 2006/01/24
- Re: [Qemu-devel] [PATCH] PC speaker emulation (fixed point), Joachim Henke, 2006/01/24
- Re: [Qemu-devel] [PATCH] PC speaker emulation (fixed point), Sebastian Kaliszewski, 2006/01/24
- Re: [Qemu-devel] [PATCH] PC speaker emulation (fixed point), Fabrice Bellard, 2006/01/24
- Re: [Qemu-devel] [PATCH] PC speaker emulation (fixed point), Sebastian Kaliszewski, 2006/01/24
- [Qemu-devel] [PATCH] PC speaker emulation (square wave), Joachim Henke, 2006/01/25
- Re: [Qemu-devel] [PATCH] PC speaker emulation (square wave),
Jamie Lokier <=
- Re: [Qemu-devel] [PATCH] PC speaker emulation (square wave), Sebastian Kaliszewski, 2006/01/26
- Re: [Qemu-devel] [PATCH] PC speaker emulation (square wave), Joachim Henke, 2006/01/29