Abstract: Methods and apparatus to analyze microphone placement for watermarks and signatures are disclosed. An example instructions cause one or more processors to at least determine a variance of a magnitude spectrum of a frequency band corresponding to a frequency spectrum of a first audio signal sensed with an audio sensor. The example instructions further cause the one or more processors to determine, based on the variance, a recovery rate associated with at least one of watermark detection or signature generation to be performed on a second audio signal to be sensed with the audio sensor.

Abstract: Methods and apparatus to analyze microphone placement for watermarks and signatures are disclosed. An example instructions cause one or more processors to at least determine a variance of a magnitude spectrum of a frequency band corresponding to a frequency spectrum of a first audio signal sensed with an audio sensor. The example instructions further cause the one or more processors to determine, based on the variance, a recovery rate associated with at least one of watermark detection or signature generation to be performed on a second audio signal to be sensed with the audio sensor.

Abstract: Methods and apparatus to analyze microphone placement for watermarks and signatures are disclosed. An example apparatus includes a microphone. The example apparatus further includes a meter to convert a noise burst detected by the microphone to a digital signal. The example apparatus further includes a signal transformer to determine a frequency spectrum of the digital signal. The example apparatus further includes a processor to determine a variance of a magnitude spectrum of a frequency band corresponding to the frequency spectrum and determine, based on the variance, a recovery rate associated with at least one of watermark detection or signature generation to be performed on an audio signal detected by the microphone.

Abstract: Methods and apparatus to analyze microphone placement for watermarks and signatures are disclosed. An example apparatus includes a microphone. The example apparatus further includes a meter to convert a noise burst detected by the microphone to a digital signal. The example apparatus further includes a signal transformer to determine a frequency spectrum of the digital signal. The example apparatus further includes a processor to determine a variance of a magnitude spectrum of a frequency band corresponding to the frequency spectrum and determine, based on the variance, a recovery rate associated with at least one of watermark detection or signature generation to be performed on an audio signal detected by the microphone.

Abstract: Methods and apparatus to analyze microphone placement for watermarks and signatures are disclosed. An example apparatus includes a signal transformer to determine a frequency spectrum of a received noise burst; a variance determiner to compute a variance of a frequency band in the frequency spectrum; and a detection rates determiner to determine a recovery rate of at least one of a watermark or a signature based on the computed variance.

Abstract: Methods and apparatus to analyze microphone placement for watermarks and signatures are disclosed. An example apparatus includes a signal transformer to determine a frequency spectrum of a received noise burst; a variance determiner to compute a variance of a frequency band in the frequency spectrum; and a detection rates determiner to determine a recovery rate of at least one of a watermark or a signature based on the computed variance.