I need to evaluate noise cancelling microphone technology to prove it improves Alexa’s speech recognition performance in noisy environments. To do the testing, I need one of the following: 1. A program that uses AVS so I can supply my own microphone input. It would be more convenient if the program was running on Windows, OSX or iOS, but a program running on Android or Linux would also work. 2. A device that uses AVS, but the device would need a microphone or headset jack so I can supply the microphone audio. I appreciate any suggestions of any existing programs or devices I can use so I don’t have to create my own for this testing.