 Exclusive mode is useful for applications that demand the least amount of intermediate processing of the audio data or those that want to output compressed audio data such as Dolby Digital, DTS or WMA Pro over S/PDIF.WASAPI exclusive mode is similar to kernel streaming in function, but no kernel mode programming is required.In "shared mode", audio streams are rendered by the application and optionally applied per-stream audio effects known as "Local Effects (LFX)" (such as per-session volume control).