摘要:
A branched monoester represented by the formula R.sup.1 COOR.sup.2 acts as a silicone-dissolving or solubilizing agent. In the formula, R.sup.1 is an isoalkyl group having 4 to 17 carbon atoms, and R.sup.2 is an isoalkyl group having 3 to 18 carbon atoms.
摘要:
A hearing assistance suitability determining device, that determines suitability including whether a subject can clearly hear speech using dichotic hearing assistance, includes: a subject hearing ability information input unit; a hearing ability type determining unit that determines at least one hearing ability type that corresponds to the hearing ability information, based on hearing ability information frequency characteristics; a suitability determining unit that determines suitability for dichotic hearing assistance based on the at least one hearing ability type determined by the hearing ability type determining unit; and suitability presenting unit that presents the suitability determined by the suitability determining unit. The suitability determining unit determines, by referring to a correspondence relationship, suitability based on clarity improvement amount for speech sound corresponding to the determined hearing ability type, the correspondence relationship indicating, for each hearing ability type, degree of perceived speech clarity improvement by the dichotic hearing assistance.
摘要:
A hearing assistance suitability determining device, that determines suitability including whether a subject can clearly hear speech using dichotic hearing assistance, includes: a subject hearing ability information input unit; a hearing ability type determining unit that determines at least one hearing ability type that corresponds to the hearing ability information, based on hearing ability information frequency characteristics; a suitability determining unit that determines suitability for dichotic hearing assistance based on the at least one hearing ability type determined by the hearing ability type determining unit; and suitability presenting unit that presents the suitability determined by the suitability determining unit. The suitability determining unit determines, by referring to a correspondence relationship, suitability based on clarity improvement for speech sound corresponding to the determined hearing ability type, the correspondence relationship indicating, for each hearing ability type, degree of perceived speech clarity improvement by the dichotic hearing assistance.
摘要:
An audio decoding device of the present invention includes: a decoding unit decoding a stream to a spectrum coefficient, and outputting stream information when a frame included in the stream cannot be decoded; an orthogonal transformation unit transforming the spectrum coefficient to a time signal; a correction unit generating a correction time signal based on an output waveform within a reference section that is in a section that overlaps between an error frame section to which the stream information is outputted and an adjacent frame section and that is a section in the middle of the adjacent frame section, when the decoding unit outputs the stream information: and an output unit generating the output waveform by synthesizing the correction time signal and the time signal.
摘要:
A hearing aid (100) fits in an ear of a user and amplifies a sound and outputs the amplified sound. Specifically, the hearing aid includes: a microphone (110) as a pick-up unit which picks up the sound; a wireless communicating unit (130) which receives, from an external apparatus connected via wireless, an instruction for outputting a searching sound, the instruction for outputting a searching sound which is used for outputting a searching sound; an amplifier (140) which amplifies the outputted sound; an earphone (150) as an outputting unit which outputs the sound amplified by the amplifier (140); and an operation switching unit (120) which switches between a hearing mode and a searched mode, the hearing mode causing the amplifier (140) to amplify a hearing sound which is a sound picked up by the microphone (110) with a use of a first amplification factor, and the searched mode causing the amplifier (140) to amplify the searching sound, in response to the reception of the instruction for outputting a searching sound, with a use of a second amplification factor greater than the first amplification factor.
摘要:
To provide an acoustic signal processing apparatus which can reduce the amount of calculation in matrix arithmetic. An acoustic signal processing apparatus converts down-mixed acoustic signals of NI channels to acoustic signals of NO channels, where NO>NI. The acoustic signal processing apparatus includes: a first matrix arithmetic unit for performing arithmetic on a matrix with K rows and NI columns, where NO>K≧NI, for the down-mixed acoustic signals of the NI channels, and outputting K signals obtained after the matrix arithmetic; K decorrelation units for generating signals incoherent, in terms of time characteristics, with the signals obtained after the matrix arithmetic, while maintaining frequency characteristics of the signals obtained after the matrix arithmetic; and a second matrix arithmetic unit for performing arithmetic on a matrix with NO rows and (NI+K) columns for the down-mixed acoustic signals of the NI channels and for the K incoherent signals, and outputting the acoustic signals of the NO channels.
摘要:
A hearing assistance suitability determining device (120) according to the present invention is a hearing assistance suitability determining device (120) which determines a suitability (153) of a subject for dichotic hearing assistance, and includes: a hearing ability information obtaining unit (130) which obtains left-ear hearing ability information (150) and right-ear hearing ability information (151) each of which indicates a hearing ability for frequencies; a hearing ability type determining unit (131) which determines, among hearing ability types each of which is defined by a tendency in a change of the hearing ability with respect to the frequencies, a hearing ability type (152) of the hearing ability indicated by the left-ear hearing ability information (150) and the right-ear hearing ability information (151); and a suitability deciding unit (132) which determines, with reference to a suitability database (144), the suitability (153) of the subject for the dichotic hearing assistance based on a suitability corresponding, in the suitability database (144), to the hearing ability type (152) determined by the hearing ability type determining unit (131), the suitability database (144) showing a correspondence relationship between each of the hearing ability types and one of suitabilities of the subject for dichotic hearing assistance.
摘要:
Herein disclosed is an acoustic signal encoding device comprising: a coefficient table (17) having described therein coefficients representable in the form of a matrix with 2 rows by N columns simulating head-related transfer characteristics to be applied when a multi-channel signal is reproduced, a first signal outputting unit (12) for downmixing a N-channel frequency domain signal to have a 2-channel downmixed signal outputted therethrough in accordance with the coefficient table (17), and a second signal outputting unit (14) for generating subsidiary information to be used to reconstruct a multi-channel signal based on the 2-channel downmixed signal, thereby making it possible for the downmixed signal to be filtered in accordance with a desired transfer function, and thus enabling the acoustic signal decoding device to reproduce the original multi-channel spatial information simply by reproducing the first coded signal, and the original multi-channel signal by reproducing the first coded signal with the aid of the second coded signal.
摘要:
An audio encoder, which is capable of encoding multiple-channel signals so that only a downmixed signal is decoded and of further generating specific auxiliary information necessary for dividing the downmixed signal, is provided. An audio encoder (10), which compresses and encodes audio signals of N-channels (N>1), includes a downmixed signal encoding unit (11) which encodes the downmixed signal obtained by downmixing the audio signals, and an auxiliary information generation unit (12a) which generates auxiliary information necessary for decoding the downmixed signal encoded by the downmixed signal encoding unit (11) into N-channel audio signals. The auxiliary information generation unit (12a) includes transformation units (121) and (122) which transform audio signals respectively into frequency domain signals, a detection unit (123) which detects phase difference information and gain ratio information each indicates a degree of difference between frequency domain signals, and a quantization unit (125) which quantizes, for each frequency band, the phase difference information and gain ratio information detected by the detection unit (123) using the quantization precision setting table (124). The quantization precision setting table (124) functions as a division unit which divides a frequency band of a frequency domain signal into plural sub-bands.
摘要:
An audio signal encoding device includes a downmix signal encoding unit 203 and an auxiliary information generation unit 204. The downmix signal encoding unit 203 generates a downmix signal acquired by adding input signals each other using a predetermined method, encodes the downmix signal, and outputs downmix signal information 206. The auxiliary information generation unit 204 generates auxiliary information 205 using the downmix signal and the downmix signal information 206 generated by the downmix signal encoding unit 203. The auxiliary information generation unit 204 efficiently quantizes the auxiliary information 205 using human's characteristics of a perceptual direction of a sound source, a perceptual broadening, and a perceptual distance.