Abstract: A method and system for reducing head related transfer function (HRTF) storage requirements for 3-D sound processing of an input sound having a specified source angle increment is provided. Interaural time difference (ITD) values are selected based directly on the source angle increment; and HRTFs for processing the input sound are stored in angle increments larger than the source angle increment.

Abstract: A dry/wet bit for controlling dry and wet components of an output sound during processing of an input sound is provided. The bit is configurable by a program to indicate when to reverse the dry and wet components of the output sound. When the bit has a first value, the dry component is calculated by modifying the input sound by an attenuation factor, and the wet component is calculated by providing to a reverberation filter as input the dry component modified by a reverberation factor. When the bit has a second value, the wet component is calculated by providing to the reverberation filter as input the input sound modified by the attenuation factor, and the dry component is calculated by modifying the input to the reverberation filter by the reverberation factor.

Abstract: A method and system for processing for processing HRTF data for 3-D sound positioning. According to the present invention, a number of voices to be processed is determined, and a number of HRTF coefficients to be processed is determined based on the number of voices. According to the method and system disclosed herein, an M order minimum phase filter is implemented as a lower N order minimum phase filter (N<M), where the number of coefficients (N) to be processed dynamically changes based on the number of voices to be processed at a given time. As a result, an optimal implementation of the minimum phase filter reproduces a desired magnitude response while reducing power consumption.

Abstract: A method and system for reducing head related transfer function (HRTF) storage requirements for 3-D sound processing of an input sound having a specified source angle increment is provided. Interaural time difference (ITD) values are selected based directly on the source angle increment; and HRTFs for processing the input sound are stored in angle increments larger than the source angle increment.

Abstract: A dry/wet bit for controlling dry and wet components of an output sound during processing of an input sound is provided. The bit is configurable by a program to indicate when to reverse the dry and wet components of the output sound. When the bit has a first value, the dry component is calculated by modifying the input sound by an attenuation factor, and the wet component is calculated by providing to a reverberation filter as input the dry component modified by a reverberation factor. When the bit has a second value, the wet component is calculated by providing to the reverberation filter as input the input sound modified by the attenuation factor, and the dry component is calculated by modifying the input to the reverberation filter by the reverberation factor.