Audio measurement workspace

Capture sound. See what is happening.

Record measurements, monitor a room in real time, inspect waveforms, and compare detailed acoustic analysis in one focused workspace.

Measure

Three ways to work

01

Acquisition

Play a swept-sine stimulus through a chosen output and record the response with optional reference input. Captures are saved as WAV files and opened for analysis.

02

Live

Compare microphone and reference inputs continuously. Follow frequency response, level difference, and delay alignment while sound is running.

03

SPL mode

Track calibrated sound pressure level with selectable A or C weighting, response speed, averaging, and a rolling 60-second history.

Inspect

From samples to answers

Waveform and spectrogram views of a swept-sine recording

Waveform view

Work directly with the recording

Zoom into time and amplitude, choose visible channels, inspect the spectrogram, and play selected channels through your preferred output.

Frequency response comparison with average and target curves

Analysis view

Compare acoustic behavior

Review frequency and phase response, impulse alignment, distortion, THD, coherence, and phase delay across one or several recordings.

Files

Upload one or more WAV files and open waveform tabs or combined analysis tabs.

Select File Size Action

Acquisition

Use Record to play the selected stimulus and capture the response from your audio input. The recording is saved as a WAV file and added to Files.

Mic SPL

-- dBFS

Reference SPL

-- dBFS

Difference

-- dB

Delay alignment

-- ms

SPL history

Rolling 60-second log of uncalibrated weighted level values.

Frequency spectrum

Log-frequency view with selectable weighting, exponential averaging, and fractional-octave smoothing.

Sound pressure level

--.- dBFS

LAeq · dBFS

Level history

Rolling 60-second sound level trace.

Phase shift keying

BPSK encoder and decoder

Encode UTF-8 text onto a centered 19.5 kHz binary phase-shift keyed carrier. The hard output mask permits only 19-20 kHz bins.

Encoded bits

-

Decoded message

-

Microphone decode

-

Modulated waveform

First 32 bits shown. A 16-bit sync word and 16-bit payload length prefix make the frame self-describing.

Recorded microphone signal

The captured signal, including pre-roll and post-roll padding.