Spatial Sound Rendering Using Measured Room Impulse Responses

Abstract

Spatial sound rendering has many applications such as music production, movies, electronic gaming and teleconferencing. Each of the applications may have different quality and complexity requirements. This paper presents a new spatial sound rendering framework that aims at producing realistic multichannel audio while being flexible and scalable so that is can be extended and adopted by various applications. The proposed framework uses multi-channel measured room impulse response (MMRIR) as the basis for building a room acoustic model which is used to synthesize multi-channel audio. The proposed framework has been evaluated by informal listening tests.

Placement of Sound Sources in the Stereo Field Using Measured Room Impulse Responses

“…The three most popular excitation signals for RIR measurement are: a Maximum Length Sequence (MLS), an impulse, and a chirp signal. For analyzing a large concert hall, however, the impulse and the MLS sequence are not good choices for a number of reasons [11]. We therefore choose the chirp signal, which contains all the frequencies required, is a linear signal so is less likely to damage the equipment and also contains a large amount of energy.…”

“…The venue chosen was the 200 seat Recital Hall located at the School of Music, University of Victoria, Canada. The responses were measured using a swept sine wave through a microphone array and repeated at three locations on the stage [11]. This resulted in an array of 7 different impulse responses for each location on the stage.…”