sonic beacon


Sonic beacon Loudspeaker Test Software



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 Loudspeaker and Electroacoustic Test Software News

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Sonic beacon is a PC-based test and measurement system for the testing of loudspeakers and other electro-acoustic products using commercially available Windows multimedia sound cards. Sonic beacon will perform Frequency and Phase Response, Harmonic and Intermodulation Distortion, Polarity, Impedance, Sensitivity and SPL as well as other FFT and Real Time Analysis tests, Sixteen bit sampling rates up to 192 kHz and FFT lengths up to 128K points are supported. Two-channel WAVE File Open, Signal Generator, Arbitrary Filter, Oscilloscope, Spectrum Analyzer, Data Logger, SoundIO and WAVE File Save modules are included in this release.

The Wave File open module converts uncompressed PCM audio (.wav) files to the data format passed from module to module in sonic beacon processes.

The Signal Generator produces sines, squares, triangles, ramps, impulses, white noise, MLS sequences and waveforms from the clipboard. It can also sweep any of the fundamental signal types in a linear, logarithmic or exponential fashion. Multi tone signals, such as those needed for inter-modulation distortion measurements, may be generated by cascading modules.

The Arbitrary Filter module performs transversal or FFT filtering using any of six user defined frequency and phase envelopes.

The dual channel oscilloscope in addition to 4096 record averaging also allows the user to select which part of the displayed time domain signal (such as the sound reflected from a surface) to exclude from processing in subsequent modules.

The Spectrum Analyzer performs FHTs; FFTs and cross correlation on two channels of time domain data. It can display frequency domain data (amplitude, phase and impedance) on its view screen using a variety of different X and Y-axis scaling. Monochromatic line and multicolored bar plots are available in a variety of styles. Frequency calibration corrections may be applied to the displayed data without affecting the time and frequency data passed to subsequent modules. Non-weighted averaging (1, 2, 4, 8… 4096 records) and smoothing (0, 1, 2, 3… 32 records) may also be applied displayed signal traces. Second, third, fourth, fifth and total harmonic as well as second third and fourth order inter-modulation distortion modes are also available.

The SoundIO Module can record and play 5000 to 192,000 S/S audio signals on any PC sound card that is compatible with Microsoft Windows WAVE multimedia services.  Multiple sound cards and mixers are simultaneously supported with independent level, latency and frequency response calibration.

The Data-logger module can display color keyed data plots in either the time or frequency domain on any of its three variable axes’. It can be used stand-alone (visual editor) or in accumulate mode. It also provides signal gain and delay adjustment as well as convenient sum and merge functions to combine near and far-field loudspeaker measurements.

The Wave File Save module converts digital signal data generated by a stream of process modules to  RIFF format and saves it to disk as a PCM Waveform audio file (.wav).

What We Do

Sonic beacon produces electrical and acoustical data acquisition and analysis software for the Windows operating system.


About Us

Sonic beacon is a Canadian organization that provides a free set of virtual instruments that are useful for measuring the time and frequency domain responses of audio components using a personal computer. It is located in Pakenham Ontario which is near Ottawa, Canada.

News and Events

March 23, 2014: 32 and 64 Bit Versions of sonic beacon ( released. Tested on Microsoft Windows 8 (64 Bit), Microsoft Window 7 Home Premium (64 Bit) and Windows XP 32 Bit Professional.

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