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Audio power amplifier with audio processor and FFT analysis
Kubáň, Marián ; Frýza, Tomáš (referee) ; Kratochvíl, Tomáš (advisor)
This thesis is concerning about design of an audio power amplifier for home listening. Amplifier involves two audioprocessors, the first one chooses one of the four avaliable audio stereo inputs. The second just sets the considered shape of frequency characteristic of one of the picked audio signal. As soon as tha signal leaves the audiprocessors, its path is divided. First route leads to the power amplifier and second one ends up in the analog to digital converter. Both audiprocessors are adjusted via IIC line by 8-bit microcontroller. The primary role of microcontroller is to enumerate frequency coefficients through the fast fourier transformation with Cooley-tukey algorithm. Result of FFT is then displayed on graphical display unit. The whole desired parametres as volume, trebble, input selection, atc., are driven with one controller and that is a rotary encoder.
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Audio power amplifier with audio processor and FFT analysis
Kubáň, Marián ; Frýza, Tomáš (referee) ; Kratochvíl, Tomáš (advisor)
This thesis is concerning about design of an audio power amplifier for home listening. Amplifier involves two audioprocessors, the first one chooses one of the four avaliable audio stereo inputs. The second just sets the considered shape of frequency characteristic of one of the picked audio signal. As soon as tha signal leaves the audiprocessors, its path is divided. First route leads to the power amplifier and second one ends up in the analog to digital converter. Both audiprocessors are adjusted via IIC line by 8-bit microcontroller. The primary role of microcontroller is to enumerate frequency coefficients through the fast fourier transformation with Cooley-tukey algorithm. Result of FFT is then displayed on graphical display unit. The whole desired parametres as volume, trebble, input selection, atc., are driven with one controller and that is a rotary encoder.
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