Issues

• dsps_fft2r_sc16_aes3: separate truncation in the butterflies biases the sum branch and creates a one-sided noise ramp next to DC on low-level signals (ESP32-S3)

  espressif/esp-dsp#123 · Filter by author zodoczi opened on Sep 30, 2026

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

  Type: Feature Request
  espressif/esp-dsp#122 · Filter by author f4lc0n-asm opened on 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

  Status: Opened
  espressif/esp-dsp#120 · Filter by author ACEFGI opened on Aug 7, 2026

• [ESP32-P4] dsps_fft2r_fc32 intermittently corrupts output / Load access fault — esp.lp ZOL clobbered by interrupts

  Status: Opened
  espressif/esp-dsp#119 · Filter by author gavinzhou opened on Jun 18, 2026
  1

• dsps_biquad_gen_allpass180_f32 function incorrect

  Status: OpenedType: Bug
  espressif/esp-dsp#118 · Filter by author kanemcnamara opened on May 26, 2026
  2

• FIR filter on ESP32 P4 has temporary issues

  Status: Opened
  espressif/esp-dsp#117 · Filter by author rt-fa opened on Mar 24, 2026
  16

• Provide FFT example with option to connect to I2S (INMP441) input

  Status: OpenedType: Feature Request
  espressif/esp-dsp#116 · Filter by author timbo100 opened on Mar 21, 2026

• Please correct my author's nick in float FFTs in asm! (DSP-174)

  Status: Opened
  espressif/esp-dsp#115 · Filter by author f4lc0n-asm opened on Mar 13, 2026
  3

• Add support for compiling on other architectures (DSP-172)

  Status: OpenedType: Feature Request
  espressif/esp-dsp#114 · Filter by author coderforlife opened on Sep 18, 2025

• ESP32P4 Compile error (DSP-171)

  Status: OpenedType: Bug
  espressif/esp-dsp#113 · Filter by author ghost opened on Sep 2, 2025
  3

• Cannot compile on ESP32-S3/P4 due to name clash with modules/support/cplx_gen/dsps_cplx_gen.c/.S (DSP-170)

  Status: OpenedType: Bug
  espressif/esp-dsp#112 · Filter by author coderforlife opened on Aug 17, 2025
  1

• Title: ESP-DSP Support for ESP32C5 (DSP-162)

  Status: Opened
  espressif/esp-dsp#106 · Filter by author coyote0504 opened on Apr 11, 2025
  2

• Problematic HW Loops on ESP32-P4 (DSP-158)

  Status: Opened
  espressif/esp-dsp#102 · Filter by author f4lc0n-asm opened on Mar 24, 2025
  10

• 这个fft是怎么使用的？ (DSP-156)

  Status: In Progress
  espressif/esp-dsp#100 · Filter by author WhiteDoveBuct opened on Feb 25, 2025
  3

• 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)

  Status: OpenedType: Feature Request
  espressif/esp-dsp#95 · Filter by author f4lc0n-asm opened on Sep 29, 2024
  2

• cplx2real function can only be used with fft4r initialized, and the example creates confusion (DSP-147)

  Status: Opened
  espressif/esp-dsp#94 · Filter by author alexbarcelo opened on Sep 24, 2024
  8

• SOLVED: An ESP32(-S3) 3-cycle/tap fp32 FIR filter of arbitrary length and decimation (DSP-145)

  Resolution: DoneStatus: DoneType: Feature Request
  espressif/esp-dsp#92 · Filter by author f4lc0n-asm opened on Aug 19, 2024
  1

• Linear-to-Mel scale projection using Mel filterbanks. (DSP-142)

  Status: OpenedType: Feature Request
  espressif/esp-dsp#89 · Filter by author hbellafkir opened on Aug 9, 2024

• 作为一个信号处理的库，是否应该包括IFFT (DSP-135)

  Status: OpenedType: Feature Request
  espressif/esp-dsp#84 · Filter by author shenxiaozheng opened on Mar 12, 2024

• FFT is wrong by factor 2. Violation of the Parseval–Plancherel identity (DSP-130)

  Status: Opened
  espressif/esp-dsp#81 · Filter by author Bobobel opened on Feb 1, 2024
  3

• IIR inconsistencies and documentation problems (DSP-123)

  Status: In Progress
  espressif/esp-dsp#80 · Filter by author Bobobel opened on Dec 21, 2023

• SOLVED: TRIAC delayed-trigger compensation routines for ESP32(-S3), ESP32-P4 Rev. 1.0 and the new ESP32-P4/S31/E22 (DSP-119)

  Status: Opened
  espressif/esp-dsp#76 · Filter by author f4lc0n-asm opened on Nov 12, 2023
  2

• esp32s3 fft4real hangs if fft4r related codes are removed. (DSP-117)

  espressif/esp-dsp#75 · Filter by author wuyuanyi135 opened on Sep 4, 2023
  4

• Two environments with different actions were specified for the same target (DSP-115)

  espressif/esp-dsp#74 · Filter by author pperonski opened on Aug 16, 2023
  5

• 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)

  espressif/esp-dsp#73 · Filter by author mrSilkie opened on Jul 22, 2023
  3