Patent ID: 8233630
Filing Date: 2012-07-31
Classification: G10H,H04R,H04S

Abstract:
1. A test apparatus comprising: output means for outputting, as a test sound source, a sound element according to a minimum output waveform unit equal to a predetermined sample count for analog to digital conversion expressed by a power of 2, wherein the sound element is generated based on a predetermined frequency component of a sinusoidal wave, a integer multiple of periods of the sinusoidal wave matching the predetermined sample count, and the predetermined frequency component from among a plurality of predetermined frequency components synthesized from a virtual base sound component and having a frequency higher than the virtual base sound component by a predetermined number of octaves, the virtual base sound component having a frequency equal to 1/(2P) of the predetermined frequency component, the predetermined frequency component having the integer multiple of periods matching the predetermined sample count, where P represents a natural number; sampling means for sampling an audio signal obtained as a result of capturing a sound in space by a microphone placed at an expected listening position of a user in the space, at a predetermined timing according to the minimum output waveform unit equal to the predetermined sample count, wherein the space is external to the test apparatus and wherein a signal of the sound element outputted by the output means is emitted in the space as a test sound by a plurality of speakers arranged in the space at positions in accordance with a predetermined audio configuration used with the expected listening position; and test means for obtaining test results in terms of a predetermined test item from analysis results obtained by executing a predetermined frequency analysis on the audio signal sampled by the sampling means.