From 9f053ec842668194a90717e2f8243e7f6b183bd7 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Martin=20Stensg=C3=A5rd?= Date: Tue, 15 Apr 2025 17:12:35 +0200 Subject: README: add references --- README | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) (limited to 'README') diff --git a/README b/README index b0d892b..7cc348c 100644 --- a/README +++ b/README @@ -4,10 +4,6 @@ Gate Array Learn make doas make load -Pulse Density Modulation - https://en.wikipedia.org/wiki/Pulse-code_modulation - https://curiouser.cheshireeng.com/2015/01/21/pdm-in-attiny85-source-code/ - Raspberry Pi UART Enable serial communication in raspi-config. @@ -18,3 +14,12 @@ UART pv /dev/ttyUSB1 > pcm.raw hexdump -ve '1/1 "%u\n"' pcm.raw > pcm.txt play -r 48k -e unsigned-integer -b 8 -c 1 pcm.raw + +References + Pulse Density Modulation + https://curiouser.cheshireeng.com/2015/01/21/pdm-in-attiny85-source-code/ + https://en.wikipedia.org/wiki/Pulse-code_modulation + https://tomverbeure.github.io/2020/10/04/PDM-Microphones-and-Sigma-Delta-Conversion.html + https://tomverbeure.github.io/2020/12/20/Design-of-a-Multi-Stage-PDM-to-PCM-Decimation-Pipeline.html + Verilog by Example (Blaine C. Raedler 2021) + http://readler.com/books2.html -- cgit v1.2.3