Abstract: The disclosure herein aims to provide an electronic device that makes a sound recording, which gives a realistic sensation. An electronic device disclosed herein includes an imaging unit that captures an image of a subject; an acquiring unit that acquires a parameter having a constant relation with a subject distance that is a distance from the subject to the device; a sound collecting unit that collects sound and generates sound data; a zooming unit that adjusts a magnification of an image of the subject; and a sound processing unit that changes a degree of changing a volume indicated by the sound data with respect to the change in the magnification, according to the parameter.

Abstract: The disclosure herein aims to provide an electronic device that makes a sound recording, which gives a realistic sensation. An electronic device disclosed herein includes an imaging unit that captures an image of a subject; an acquiring unit that acquires a parameter having a constant relation with a subject distance that is a distance from the subject to the device; a sound collecting unit that collects sound and generates sound data; a zooming unit that adjusts a magnification of an image of the subject; and a sound processing unit that changes a degree of changing a volume indicated by the sound data with respect to the change in the magnification, according to the parameter.

Abstract: A recording apparatus which executes copy control utilizing copy control information which is indicative of plural types of copy control includes an electronic watermark detection device, which detects a predetermined copy control information portion of the copy control information out of a content over which an electronic watermark expressing the copy control information is superimposed, and a recording device which records a content in accordance with a detection result obtained by the electronic watermark detection device.

Abstract: A recording apparatus which executes copy control utilizing copy control information which is indicative of plural types of copy control includes an electronic watermark detection device, which detects a predetermined copy control information portion of the copy control information out of a content over which an electronic watermark expressing the copy control information is superimposed, and a recording device which records a content in accordance with a detection result obtained by the electronic watermark detection device.

Abstract: For audio data configured in units of frames with a header at the top and compressed in a way such that data corresponding to a specific frame is also present in a different frame, the present invention executes at least one of the following processing (1) and processing (2) at dividing this compressed audio into two pieces of audio data, i.e., front and rear pieces, at a predetermined position. (1) A step to divide the audio data into front and rear pieces, and a step to add data of a predetermined number of bytes at the beginning of the rear audio data to an end of the front audio data. (2) A step to divide the audio data into front and rear pieces, and a step to add data of a predetermined number bytes from an end of the front audio data to the front of the beginning of the rear audio data. This prevents the generation of abnormal noise even when data is compressed in a way, typically in MP3, such that location of a frame and location of data for that frame do not always match.

Abstract: It purposes to provide a D/A conversion apparatus of a high accuracy oversampling method by noise shaping which is not needed a high frequency clock or accurate working, and a high accuracy A/D conversion apparatus having a configuration to which said D/A conversion technology is applied. It has configuration outputting the digital signal by dividing to plural 1-bit D/A converters, and by using said D/A converters so as to circulate, correlation of the signal and the output value of a specified 1-bit D/A converter is canceled, and noise or distortion due to a relative error of the 1-bit D/A converter is reduced.

Abstract: An offset reducer includes an adder for adding an input signal and an offset cancel signal to reduce an offset component of the input signal. A converter serves to measure a difference between a sum of past periods during which an output signal of the adder was positive and a sum of past periods during which the output signal of the adder was negative. The converter outputs an offset detection signal of a given value which depends on a sign of the measured difference when an absolute value of the measured difference exceeds a given difference. The converter initializes the measured difference to a given initial difference when the offset detection signal is outputted. An integrator serves to accumulate the offset detection signal outputted from the converter. The integrator generates the offset cancel signal in accordance with a result of the accumulating the offset detection signal. The output signal of the adder constitutes an offset-free signal corresponding to the input signal.

Abstract: In a digital signal noise shaping requantization circuit formed of a first delta-sigma quantizer (main loop) for executing noise shaping of an input digital signal and a second delta-sigma quantizer (sub-loop) which receives as input signal the quantization error of a local quantizer in the first delta-sigma quantizer, and whose output signal is differentiated and added to the output signal from the first delta-sigma quantizer, the second delta-sigma quantizer includes a feedback circuit for operating on a quantization error of a local quantizer therein, with a predetermined transfer function.

Abstract: A noise shaping quantization D/A converter in which an input digital signal is supplied to a single-integration sigma delta modulation circuit having quantization levels which include zero level, with a quantization error signal from the single-integration circuit being supplied to a double-integration noise shaping quantization circuit having quantization levels which also include zero level, and an output signal from the double-integration circuit being differentiated and summed with the single-integration circuit output to obtain a bit-compressed digital signal for D/A conversion. Offset of the analog output signal during a zero hold status of the input digital signal is eliminated, and increased efficiency of supply voltage utilization is attained, together with increased S/N ratio.

Abstract: A first analog input signal is converted into a plurality of second analog signals having different levels respectively. The second analog signals are inputted into respective analog-to-digital converters. Values of output signals from the respective converters are adjusted in accordance with the values of the output signals from the respective converters to convert the output signals from the respective converters into respective adjusted signals. One of the adjusted signals is selected in accordance with the values of the output signals from the respective converters. The selected signal is produced as a system output signal.

Abstract: An electronic musical instrument includes a first waveform memory for storing a waveform corresponding to an attack portion of a musical tone and one period of a steady waveform produced after the attack, a second waveform memory for storing one period of a waveform different from the contents of the first waveform memory, a waveform reader which reads out the first and second waveform from the first and second waveform memory, respectively, and an envelope generator which generates two separate envelope signals. The first waveform including the attack portion of the musical tone and the periodic second waveform are multiplied by the separate envelope signals, respectively, and then the products of the multiplication are added together. The sum of the products is provided as an output.

Abstract: A wave generating method and a wave generating apparatus using the method are arranged such that plurality of wave samples, each being generated successively, are respectively weighted by, for example, being multiplied by a plurality of wave functions generated corresponding to the plurality of wave samples. The plurality of weighted wave samples are summed to obtain a desired wave. The kind of each of the plurality of wave samples generated successively is changed at each time when the value of corresponding one of the plurality of wave functions becomes zero.

Abstract: A multiple wave generator for an electronic musical instrument which has a wave data memory storing plural data samples of a wave shape, a wave address register storing wave address data partially designating sampled data in the wave data memory, a difference address register storing difference address data which specifies incremental address amount, a wave address calculator adding the wave address data to the difference address data and writing into the wave address register, the summed address data being separated into wave memory address data and partial address data, and a wave calculator. The wave memory address data, which are part of the wave address data, are applied to the wave data memory for reading out one data sample, and the one data sample and the partial address data are applied to the wave calculator for calculating interpolated wave sample data corresponding to the wave memory address and the partial address.

Abstract: An electronic musical instrument has a generator assigner for supplying note data and octave data by key stroke entry, a top octave synthesizer for generating 12 of the highest pitch signals for each note, a circuit for selecting one highest pitch signal from the 12 highest pitch signals according to note data, a binary counter for dividing one highest pitch signal to produce several pitch signals, and circuits for selecting one pitch signal out of several pitch signals obtained by the binary counter. The circuits are further controlled by both octave data and note data to generate octave series tone signals and non-octave series tone signals such as quint series tone signals.