espressif/esp-dsp

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DSP library for ESP-IDF

Stars: 707
Forks: 125
Open beginner issues: 0
Indexed issues: 31

Dominant language: C
License: Apache-2.0
Last GitHub push: May 11, 2026
Latest indexed: Sep 21, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed
PR merge metrics: No merged PRs in 30d

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31 open issues indexed

SOLVED: 3-cycle/tap fp32 FIR filters for RISC-V "FC" like ESP32-P4/S31/E22? Open

Type: Feature Request

Difficulty 4/5 3-5 days Newbie friendliness 35/100

espressif/esp-dsp#122 · Opened Sep 16, 2026
[ESP32-S3] dsps_add/sub/mul_{s8,s16}_aes3 silently write out of bounds — output pointer omitted from the existing alignment guard Open

Status: Opened

Difficulty 3/5 1-2 days Newbie friendliness 35/100

espressif/esp-dsp#120 · Opened Aug 7, 2026
[ESP32-P4] dsps_fft2r_fc32 intermittently corrupts output / Load access fault — esp.lp ZOL clobbered by interrupts Open

Status: Opened

Difficulty 4/5 3-5 days Newbie friendliness 38/100

espressif/esp-dsp#119 · Opened Jun 18, 2026
dsps_biquad_gen_allpass180_f32 function incorrect Open

Status: Opened Type: Bug

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

espressif/esp-dsp#118 · Opened May 26, 2026
FIR filter on ESP32 P4 has temporary issues Open

Status: Opened

Difficulty 4/5 3-5 days Newbie friendliness 38/100

espressif/esp-dsp#117 · 16 comments · Opened Mar 24, 2026
Provide FFT example with option to connect to I2S (INMP441) input Open

Status: Opened Type: Feature Request

Difficulty 4/5 3-5 days Newbie friendliness 35/100

espressif/esp-dsp#116 · Opened Mar 21, 2026
Please correct my author's nick in float FFTs in asm! (DSP-174) Open

Status: Opened

Difficulty 1/5 Under an hour Newbie friendliness 55/100

espressif/esp-dsp#115 · 3 comments · Opened Mar 13, 2026
Add support for compiling on other architectures (DSP-172) Open

Status: Opened Type: Feature Request

Difficulty 4/5 3-5 days Newbie friendliness 38/100

espressif/esp-dsp#114 · Opened Sep 18, 2025
ESP32P4 Compile error (DSP-171) Open

Status: Opened Type: Bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

espressif/esp-dsp#113 · 3 comments · Opened Sep 2, 2025
Cannot compile on ESP32-S3/P4 due to name clash with modules/support/cplx_gen/dsps_cplx_gen.c/.S (DSP-170) Open

Status: Opened Type: Bug

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

espressif/esp-dsp#112 · 1 comment · Opened Aug 17, 2025
Title: ESP-DSP Support for ESP32C5 (DSP-162) Open

Status: Opened

Difficulty 5/5 Over a week Newbie friendliness 20/100

espressif/esp-dsp#106 · 1 comment · Opened Apr 11, 2025
Problematic HW Loops on ESP32-P4 (DSP-158) Open

Status: Opened

Difficulty 4/5 3-5 days Newbie friendliness 30/100

espressif/esp-dsp#102 · 10 comments · Opened Mar 24, 2025
这个fft是怎么使用的？ (DSP-156) Open

Status: In Progress

Difficulty 4/5 3-5 days Newbie friendliness 35/100

espressif/esp-dsp#100 · 3 comments · Opened Feb 25, 2025
SOLVED: An ESP32(-S3) fast fp32 division using a reciprocal inline assembly with arg/result passsed in fp32 regs for even more speed! (DSP-148) Open

Status: Opened Type: Feature Request

Difficulty 4/5 3-5 days Newbie friendliness 42/100

espressif/esp-dsp#95 · 2 comments · Opened Sep 29, 2024
cplx2real function can only be used with fft4r initialized, and the example creates confusion (DSP-147) Open

Status: Opened

Difficulty 2/5 1-3 hours Newbie friendliness 65/100

espressif/esp-dsp#94 · 7 comments · 2 reactions · Opened Sep 24, 2024
SOLVED: An ESP32(-S3) 3-cycle/tap fp32 FIR filter of arbitrary length and decimation (DSP-145) Open

Resolution: Done Status: Done Type: Feature Request

Difficulty 5/5 Over a week Newbie friendliness 15/100

espressif/esp-dsp#92 · 1 comment · Opened Aug 19, 2024
Linear-to-Mel scale projection using Mel filterbanks. (DSP-142) Open

Status: Opened Type: Feature Request

Difficulty 4/5 3-5 days Newbie friendliness 35/100

espressif/esp-dsp#89 · 2 reactions · Opened Aug 9, 2024
Compile `esp-dsp` for `IDF_TARGET=linux` (DSP-136) Open

Resolution: Done Status: Done Type: Feature Request

Difficulty 4/5 3-5 days Newbie friendliness 35/100

espressif/esp-dsp#85 · 2 comments · Opened Apr 5, 2024
作为一个信号处理的库，是否应该包括IFFT (DSP-135) Open

Status: Opened Type: Feature Request

Difficulty 5/5 Over a week Newbie friendliness 25/100

espressif/esp-dsp#84 · Opened Mar 12, 2024
FFT is wrong by factor 2. Violation of the Parseval–Plancherel identity (DSP-130) Open

Status: Opened

Difficulty 3/5 1-2 days Newbie friendliness 35/100

espressif/esp-dsp#81 · 3 comments · Opened Feb 1, 2024
IIR inconsistencies and documentation problems (DSP-123) Open

Status: In Progress

Difficulty 4/5 3-5 days Newbie friendliness 28/100

espressif/esp-dsp#80 · Opened Dec 21, 2023
SOLVED: TRIAC delayed-trigger compensation routine for ESP32(-S3) (DSP-119) Open

Status: Opened

Difficulty 4/5 3-5 days Newbie friendliness 25/100

espressif/esp-dsp#76 · 2 comments · Opened Nov 12, 2023
esp32s3 fft4real hangs if fft4r related codes are removed. (DSP-117) Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

espressif/esp-dsp#75 · 4 comments · Opened Sep 4, 2023
Two environments with different actions were specified for the same target (DSP-115) Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

espressif/esp-dsp#74 · 5 comments · 1 reaction · Opened Aug 16, 2023
Using LyraT to sample input, IIR functions to process, then output. The dsps_biquad_gen_xxx_f32 function creates garbage coefficients, I can't validate dsps_biquad_f32 as working. (DSP-111) Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

espressif/esp-dsp#73 · 3 comments · Opened Jul 22, 2023
Feature Request: Python wrapper (DSP-109) Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

espressif/esp-dsp#71 · 1 reaction · Opened Jun 28, 2023
No optimized dsps_bit_rev_sc16 resulting slow sc16 S3 FFT performance overall (DSP-98) Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

espressif/esp-dsp#65 · 1 comment · 1 reaction · Opened Feb 1, 2023
Support iFFT (DSP-97) Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

espressif/esp-dsp#62 · 5 comments · Opened Jan 15, 2023
Two potential issues regarding dsps_fft4real example as well as documentation for cplx2real(). (DSP-91) Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

espressif/esp-dsp#58 · 1 comment · Opened Nov 13, 2022
Memory alignment issues (DSP-80) Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

espressif/esp-dsp#46 · 1 comment · Opened Apr 23, 2022
Support for more image processing functions (DSP-81) Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

espressif/esp-dsp#39 · 1 comment · Opened Mar 11, 2022

espressif/esp-dsp

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