Rockbox mail archiveSubject: Re: DSP: low pass filter
Re: DSP: low pass filter
From: BlueChip <cs_bluechip_at_webtribe.net>
Date: Sat, 13 Aug 2005 23:25:04 +0100
Check out "fast fourier transforms" (FFT) available for most DSPs and most
>I need a simple (doesn't have to be really accurate) filter to cut all
>high frequencies (say > 120 hz) from a stream of samples. This way I want
>the peakmeter to react only on the bass tones.
>I already have dynamic backlight dimming linked to the peakmeter value,
>but it flashes at high tones too now...
>Can anybody help me out?
Received on 2005-08-14