RepairFilter

Restoration For Pro Tools™

RepairFilter combines an intuitive analytical tool with eight tracking notch filters and a high-pass/low-pass filter set.

It can "surgically" remove steady state tones and other disturbances, while minimizing the effects on the rest of the audio program. The audio signal is displayed in a real-time spectrogram. This spectrogram shows the last three seconds of playback history, where frequencies are mapped on the y-axis and time on the x-axis. Amplitudes of frequencies are displayed using the color spectrum.

Each notch filter in "Auto" mode will search for a steady-state tone and automatically set its center frequency, bandwidth and attenuation. In "Cursor" mode, the operator can click on the spectrogram frequency axis to set the filter's center frequency. In "Edit" mode, exact center frequencies can be entered manually, using numeric keyboard entry. RepairFilter simplifies the process of identifying and removing steady-state disturbances in old optical film sound recordings, mains hum and harmonics, video monitor line whistles and idle tones from A/D -- all while maintaining the utmost in signal integrity.