METHODS AND APPARATUS TO INSPECT CHARACTERISTICS OF MULTICHANNEL AUDIO

Methods, apparatus, systems and articles of manufacture are disclosed for audio watermarking and, more particularly, methods and apparatus to inspect characteristics of multichannel audio. Example methods disclosed herein are further to obtain an audio subchannel of the multichannel audio signal, detect an embedded watermark in the audio subchannel of the multichannel audio signal, determine a characteristic of the audio subchannel of the multichannel audio signal based on the embedded watermark, and in response to determining an issue with the characteristic of the audio subchannel of the multichannel audio signal, distribute an alert.