SOUND FIELD ADJUSTMENT DEVICE
First Claim
1. A sound field adjusting device which is arranged in an acoustic space and which reproduces signals from plural speakers arranged within a predetermined distance from a listening position, the predetermined distance being a distance at which an optimum delay amount making the level difference of the speaker pair zero varies dependently upon the frequency, the device comprising:
- a signal supplying unit which supplies the signals to the plural speakers;
a frequency band dependent delay unit which gives delays of delay amounts different for respective frequency bands to the signals supplied to at least a proximity speaker pair, which is a speaker pair nearest from the listening position; and
a constant delay unit which gives delays of a constant delay amount to the speaker pairs, other than the speaker pairs to which the frequency band dependent delay unit gives the delays, regardless of the frequency bands.
1 Assignment
0 Petitions
Accused Products
Abstract
A sound field adjusting device reproduces signals from plural speaker pairs arranged in an acoustic space. The device supplies signals to the plural speakers, gives different delays for the respective frequency bands to the signals supplied to at least to a proximity speaker pair which is a speaker pair closest to a listening position among the plural speakers, and gives a delay of a constant delay amount regardless of the frequency band to the speaker pairs other than the speaker pair to which the delays of different delay amounts for the respective frequency bands are given. In this case, the sound field adjusting device does not perform level adjustment, and the sound field adjustment is performed by only adjusting the delay amounts. Therefore, deterioration of sound pressure balance at the position other than the listening position can be avoided, and sound pressure balance at the listening position improved.
18 Citations
9 Claims
-
1. A sound field adjusting device which is arranged in an acoustic space and which reproduces signals from plural speakers arranged within a predetermined distance from a listening position, the predetermined distance being a distance at which an optimum delay amount making the level difference of the speaker pair zero varies dependently upon the frequency, the device comprising:
-
a signal supplying unit which supplies the signals to the plural speakers; a frequency band dependent delay unit which gives delays of delay amounts different for respective frequency bands to the signals supplied to at least a proximity speaker pair, which is a speaker pair nearest from the listening position; and a constant delay unit which gives delays of a constant delay amount to the speaker pairs, other than the speaker pairs to which the frequency band dependent delay unit gives the delays, regardless of the frequency bands. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9)
-
-
8. (canceled)
Specification
-
- Resources
-
Current AssigneePioneer Corporation
-
Original AssigneePioneer Corporation
-
InventorsObata, Kensaku, Ohta, Yoshiki, Iseki, Akihiro
-
Application NumberUS13/380,404Publication NumberTime in Patent OfficeDaysField of SearchUS Class Current381/17CPC Class CodesH04S 3/002 Non-adaptive circuits, e.g....
