F-Term-List

H04R5/02@F

AA00
SPATIAL OR STRUCTURAL ARRANGEMENTS OF SPEAKERS

AA01

AA02

AA03

. Speaker-box-related arrangements

. Speaker arrangements

. . Quadraphonic arrangements

AA11

AA12

AA13

AA14

AA15

AA16

AA17

. Arrangements in vehicles

. . Speaker-mounting structures

. . Automobile-speaker arrangements

. . . Variants for forming sound images in specific directions

. . . Variants for extending sound fields

. . . Variants for emphasizing the bass

. . Arrangements related to volume adjustment

H04R5/027@A

AB00
SPATIAL OR STRUCTURAL ARRANGEMENTS OF MICROPHONES

AB01

AB02

AB03

AB04

. Free rotation

. Ease of attachment and detachment, or ease of mounting and assembly

. Mid-site arrangements

. Quadraphonic arrangements

AB11

AB12

AB13

AB14

AB15

AB16

AB17

. Bi-aural sound pickup

. . Sound pickup by dummy heads

. . . Structure of the dummy head

. . . Arrangement of microphones within the dummy head

. . Sound pickup by devices other than a dummy head

. . Determination of directivity using the head movement of the listener

. . Quadraphonic types

H04R5/033@Z

AC00
HEADPHONES FOR THREE-DIMENSIONAL SOUND COMMUNICATIONS

AC01

AC02

AC03

. Headphone shapes

. Bi-aural sound types

. Variants with microphone functions

H04R5/04@A

AD00
CIRCUIT ARRANGEMENTS

AD01

AD02

AD03

AD04

. Circuit arrangements on the speaker side

. . Speaker-switching circuits

. . Quadraphonic types

. Circuit arrangements on the microphone side

AD11

AD12

AD13

AD14

. Switching with plugs or jacks on the speaker side

. . Driven by Bell Telephone Laboratory (BTL) processes when monaural

. . Expanded sound fields for stereophonic sound

. . Quadraphonic types

5D011	Stereophonic arrangements
	H04R5/00 -5/04@Z