Audio data reproducing device for reproducing digital voice signals on a magnetic tape at a different speed than the speed at which the signals are recorded

An audio data reproducing apparatus for reproducing digital voice signals from slanted tracks formed on a magnetic tape, the digital voice signals being reproduced in a different speed playback mode wherein the magnetic tape is driven at a speed different than the tape speed at which the digital voice signals were recorded, comprising

• means for running said magnetic tape at said different playback speed,
• a playback rotary magnetic head adapted to be moved by a head moving unit in a direction of crossing said slanted tracks for effecting follow-up tracing of said slanted tracks for reproducing signals recorded on said slanted tracks even when said magnetic tape is run at said speed different than the recording speed,
• first memory means for storing said digital voice signals reproduced from said slanted tracks by said magnetic head on a block-by-block basis,
• write address generating means for generating, during the different speed playback mode, write address data to permit said digital voice signals recorded on the slanted tracks of a new frame traced by said playback rotary magnetic head to be written in said first memory means based on information signals indicating that said new track has been traced by said playback rotary magnetic head,
• readout address generating means for generating first readout address data to permit said digital voice signals stored in said first memory means during said different speed playback mode to be read out at a readout speed conforming to the different tape playback running speed,
• interpolating means for interpolating the audio data readout from said first memory means by said first readout address data in accordance with the tape playback running speed,
• second memory means for storing interpolation coefficients employed for interpolation, said interpolation coefficients conforming to the tape playback running speed,
• speed data forming means for forming speed data based on the tape playback running speed, write address data and the first readout address data, said speed data indicating the speed of reading out said digital voice signals from said first memory means,
• speed data processing means for generating, based on said speed data, pulse signals to enable generating said first readout address data and for generating second readout address data for enabling readout of said second memory means,
• flag generating means for generating a first flag responsive to an information signal indicating that said playback rotary magnetic head has traced a slanted track of a new block, said information signals being based on running position of said magnetic tape, and
• flag processing means for forming, based on said first flag, signals for generating the write address data for said first memory means.