Interpret dBFS, SNR, latency and distortion only within the route and processing settings shown in Evidence.
IP-AUD-01 / PCM LEVEL / DEVICE PATH
Acoustic Round-Trip Audio Latency Test
Run five speaker-to-microphone probes and report the median detected acoustic return.
Monitoring, calls or games have a noticeable audio delay.
This focused entry uses the shared Audio protocol. The measurement logic and Evidence version remain identical to the complete lab.
Remove the easiest false alarms first.
01
Close calls and recording apps, select the intended route and keep system gain fixed.
02
Use a moderate safe volume and avoid changing microphone distance during a protocol.
03
Treat acoustic and confirmed fixed-gain loopback sessions as different measurement paths.
Run one repeatable protocol.
- 01
Use speakers at a safe level and keep the microphone active.
- 02
Run all five short probe rounds without moving the devices.
- 03
Interpret only when at least three returns are detected.
Evidence the result should expose.
DIRECT / INFERREDFive rounds
DIRECT / INFERREDDetected rounds
DIRECT / INFERREDMedian
DIRECT / INFERREDRange
DIRECT / INFERREDConfidence
Separate observed, review and inconclusive.
Repeat with fixed gain, then compare wired, Bluetooth and direct loopback paths one variable at a time.
Acoustic measurements include speaker, room, microphone, OS and browser; they are not device specifications or hearing diagnoses.
Start with the likely path, then retest.
01
Audio buffers
02
Bluetooth
03
Browser and OS path
04
Acoustic distance