Render live audio frequency spectrum on parent device #9

New issue

Closed

opened 2026-09-02 15:25:56 +02:00 by emidab · 1 comment

emidab commented

2026-09-02 15:25:56 +02:00

Owner

Summary

Render a live frequency/spectrum view (spectrometer-style) of the captured audio on the parent device.

What to do

Apply FFT to received audio frames
Render a live frequency spectrum visualization
Sync with playback state (stop when audio receive is off)
Reasonable performance on a phone (no jank)

Acceptance criteria

Live spectrum updates from audio stream
FFT and spectrum data transform are unit-tested
Visualization widget has golden tests
Handles stream-off state gracefully

Notes

Depends on parent-side audio
Keep the DSP (FFT) separate from the widget so it's unit-testable with synthetic data

## Summary Render a live frequency/spectrum view (spectrometer-style) of the captured audio on the parent device. ## What to do 1. Apply FFT to received audio frames 2. Render a live frequency spectrum visualization 3. Sync with playback state (stop when audio receive is off) 4. Reasonable performance on a phone (no jank) ## Acceptance criteria - [ ] Live spectrum updates from audio stream - [ ] FFT and spectrum data transform are unit-tested - [ ] Visualization widget has golden tests - [ ] Handles stream-off state gracefully ## Notes - Depends on parent-side audio - Keep the DSP (FFT) separate from the widget so it's unit-testable with synthetic data

emidab added this to the v0.1 — MVP: P2P baby monitor milestone 2026-09-02 15:28:28 +02:00

emidab added the

area: parent

size: m

priority: medium

labels 2026-09-02 15:28:29 +02:00

emidab added a new dependency 2026-09-02 15:35:34 +02:00

#5 Implement parent device: receive and render streams

emidab added a new dependency 2026-09-02 15:35:35 +02:00

#6 Implement mTLS-secured stream transport and connection lifecycle

emidab added a new dependency 2026-09-02 15:35:45 +02:00

#11 Add configurable threshold notifications on parent device

emidab commented

2026-09-02 15:50:40 +02:00

Author

Owner

Merged into #8

This issue (audio spectrum) is folded into #8 "Render overlaid audio gain and spectrum visualization on parent device" — gain and spectrum are now one coordinated overlaid view sharing the same audio stream.

All content and scope from this issue now live in #8. Closing as merged.

## Merged into #8 This issue (audio spectrum) is folded into **#8 "Render overlaid audio gain and spectrum visualization on parent device"** — gain and spectrum are now one coordinated overlaid view sharing the same audio stream. All content and scope from this issue now live in #8. Closing as merged.

emidab removed a dependency 2026-09-02 15:50:56 +02:00

#11 Add configurable threshold notifications on parent device

emidab removed a dependency 2026-09-02 15:52:59 +02:00

#5 Implement parent device: receive and render streams

emidab removed a dependency 2026-09-02 15:53:00 +02:00

#6 Implement mTLS-secured stream transport and connection lifecycle

emidab closed this issue

2026-09-02 15:53:04 +02:00