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nrf52840: allow 12 voices

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In my testing, the feather bluefruit can do 12 voices at 48kHz!
This is a simple case (no LFOs, no ring modulation) so other situations might
require a lower sample rate, fewer voices, or both.

The sound is a little artifacty & low-fi but I think that's down to the speaker
& use of PWM instead of I2S.
This commit is contained in:
Jeff Epler 2023-06-09 11:27:54 -05:00
parent 24a58c3f52
commit d5a2293784
1 changed files with 1 additions and 0 deletions
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ports/nrf/mpconfigport.mk
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@ -20,6 +20,7 @@ CIRCUITPY_AUDIOBUSIO ?= 1
CIRCUITPY_AUDIOCORE ?= 1 CIRCUITPY_AUDIOCORE ?= 1
CIRCUITPY_AUDIOMIXER ?= 1 CIRCUITPY_AUDIOMIXER ?= 1
CIRCUITPY_AUDIOPWMIO ?= 1 CIRCUITPY_AUDIOPWMIO ?= 1
CIRCUITPY_SYNTHIO_MAX_CHANNELS = 12
# Native BLEIO is not compatible with HCI _bleio. # Native BLEIO is not compatible with HCI _bleio.
CIRCUITPY_BLEIO_HCI = 0 CIRCUITPY_BLEIO_HCI = 0