More information regarding Soundflower, as well as a download link may be found at. Soundflower is a free system extension for Mac OS X, version 10.2 or later, that allows for convenient routing of audio signals between applications on the Mac. AU Lab is distributed with Tiger (Mac OS X, 10.4), although it will run on Panther (Mac OS X, 10.3). This tutorial requires two free software packages in addition to FEaT: Soundflower and AU Lab. Alternatively, users may be interested in measuring the difference in time delay as an audio signal passes through each of two different loudspeakers to a reference microphone. For example, when a digital signal processor (DSP) is employed in an audio system, to optimize or otherwise alter the listening experience, it may be desirable to measure the delay introduced by the DSP's algorithms in the audio signal. ![]() At times it is desirable to measure the delay of a signal through some component, or group of components, in an audio system. These examples can then be applied to other applications in which FEaT's measurement capabilities may be considered useful. Measuring Time Delay in an Audio System Using Electroacoustics Toolbox Although Electroacoustics Toolbox (FEaT) is not limited to measuring audio systems, the measurement of audio systems is a common use that offers convenient ways to demonstrate the capabilities of the software. ![]() Electroacoustics Toolbox – Measuring Time Delay (Rev.
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