Abstract: A user listening position is estimated without imposing a burden on a user, and a sound reproduction environment suitable for listening is formed regardless of an actual speaker arrangement state. An estimation part that estimates the user listening position by using position information of N speakers that are three or more speakers, and an arrangement part that sets virtual speaker arrangement by using the user listening position are provided. Therefore, it is possible to estimate the user listening position without imposing a burden on a user and form a sound reproduction environment suitable for listening regardless of an actual speaker arrangement state.

Abstract: A user listening position is estimated without imposing a burden on a user, and a sound reproduction environment suitable for listening is formed regardless of an actual speaker arrangement state. An estimation part that estimates the user listening position by using position information of N speakers that are three or more speakers, and an arrangement part that sets virtual speaker arrangement by using the user listening position are provided. Therefore, it is possible to estimate the user listening position without imposing a burden on a user and form a sound reproduction environment suitable for listening regardless of an actual speaker arrangement state.

Abstract: A digital signal processing apparatus includes: a detection section; a prediction section; and a decision section. The detection section is configured to detect a signal position at which a signal component may possibly have been removed from a digital signal in a signal conversion processed state upon the signal conversion process. The prediction section is configured to predict, based on data at correlating portions of the digital signal in the signal conversion processed state in a demodulation frequency band, data at the signal position prior to the removal detected by the detection section. The decision section is configured to decide whether or not the absolute value of the data at the signal position prior to the removal predicted by the prediction section is lower than a resolution at the signal position and adopt the predicted data prior to the removal as interpolation data.

Abstract: A digital signal processing apparatus includes: a detection section; a prediction section; and a decision section. The detection section is configured to detect a signal position at which a signal component may possibly have been removed from a digital signal in a signal conversion processed state upon the signal conversion process. The prediction section is configured to predict, based on data at correlating portions of the digital signal in the signal conversion processed state in a demodulation frequency band, data at the signal position prior to the removal detected by the detection section. The decision section is configured to decide whether or not the absolute value of the data at the signal position prior to the removal predicted by the prediction section is lower than a resolution at the signal position and adopt the predicted data prior to the removal as interpolation data.

Abstract: A multiplexing device wherein a packet including a one-bit audio signal obtained by subjecting an analog audio signal to a delta sigma modulation process is multiplexed between a plurality of packets including a video signal having a variable bit rate by changing packet interval time information between the plurality of packets including the video signal having the variable bit rate.