Hey Team,
I'm looking for a continuously-variable sine tone generator for speaker test and QC applications.
A sine sweep can be very revealing of buzzes, rattles, port noise, driver distortion, etc. However, the software-based sine tone generators I've met (e.g. smaart) seem to be 'stepped,' both in amplitude and frequency. That waveform discontinuity, and resulting blast of harmonics, can be very distracting, enough to compromise any real critical listening. Chirp tone playbacks are okay, but you can't 'dwell' on a zone of interest like you can with manual control.
So, I'd like to find a simple hardware device that can generate sine tones at an arbitrary frequency and amplitude, each with a dedicated knob, and a smooth sweeping behavior as the knobs are adjusted. Kind of like the Meyer Sound SIM hardware sine tone generator.
Ideally, it would have a line level XLR output, and be compact, and economical. E.g. not a lab-grade arbitrary function generator with >mHz capabilities...
A bit of googling turned up this Tenma 72-490
https://www.newark.com/tenma/72-490/compact-audio-generator/dp/09P2110 ... which seems to meet my objectives except for XLR out.
Does anyone have a better recommendation? Anyone used this device and have real world experience to comment upon? Thanks!