Sound source calibration system and method

Abstract

The invention discloses a sound source calibration system and a sound source calibration method. The system comprises a sound source device, a sound pressure meter and a monitoring sound box connected with the sound source device. The sound pressure meter is placed at a sound pick-up hole of a tested device, and is used for detecting sound pressure of sound reaching the sound pick-up hole of the tested device. The sound source device plays calibration sound through the monitoring sound box, and compares the sound pressure detected by the sound pressure meter with a first sound pressure threshold value. The volume of the calibration sound is adjusted according to the comparison result until the difference value between the sound pressure detected by the sound pressure meter and the first sound pressure threshold value is within a preset range, and then the current adjusted volume is obtained. The sound source device plays the tested sound through the monitoring sound box according to the current adjusted volume. According to the system and the method, the sound pressure consistency under each testing scene is ensured, the comparison credibility between data obtained through each time of testing is ensured, and thus the performance of the tested product can be effectively evaluated.

Description

technical field [0001] The invention belongs to the field of electronic technology, and in particular relates to a sound source calibration system and method. Background technique [0002] With the maturity of electronic technology, smart devices that have the function of picking up sounds, collect sound signals, perform speech recognition, and perform corresponding functions according to the recognized speech have been developed rapidly. In daily life or in specific scenarios, such smart devices can be widely used in technical fields such as intelligent voice control, voice monitoring, and voice communication. For example, the recognition information obtained by a smart device through speech recognition is "what's the weather like today?", that is, it can query today's weather information from the cloud according to the recognition information, and broadcast today's weather according to the queried weather information. [0003] In order to detect whether the voice recognit...

AI Technical Summary

Problems solved by technology

[0004] In order to ensure the accuracy of detection, it is necessary to ensure that the sound pressure of the test sound output by the sound source device in each test in multiple tests is consistent. Different placement positions, changes in the placement of items, etc., may cause the sound field in the laboratory to be different from the previous test in each test, resulting in changes in the sound pressure of the sound source, thereby affecting the accuracy of each test result , cannot effectively evaluate the performance of the device under test

Images