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New Improvements in Audio Signal Processing for AM Broadcasting

 

A Dynamic Noise Reducer for FM Stereo

 

Three New Noise-Cancelling Electret Communication Devices

 

A New Method of Measuring the Directivity Factor, Q, Rø, Df, etc., of a Commercial Sound Loudspeaker

 

A Versatile Memory System for Console Automation

 

The 'On-Line' Application of Programmable Calculators to Audio Frequency Measurements

 

Development of a Voice Projection System for Masked Firefighters

 

Towards a More Natural Sound System

 

Development of a Loudspeaker System with Omnidirectional High Polymer Tweeters

 

Audio Systems for Life Safety

 

New Factors in Phonograph Preamplifier Design

 

Design of Linear Phase Multi-Way Loudspeaker System

 

Role of Polymer Science in Developing Materials for Phonograph Discs

 

Variable Pitch and Depth, It's Latitude and It's Limits

 

Electroacoustic Free-Field Measurements in Ordinary Rooms--Using Gating Techniques

 

Spectrum Analysis of Tape Recorder Distortion

 

Frequency Response of an Electrostatic Horn-Tweeter with Electret

 

On 'Out-of-Head Localization' in Headphone Listening

 

Power Ratings for Sound Reinforcement Loudspeaker Systems

 

Four-Channel Phonograph Bi-Radial Point Playback Criteria

 

Swept Electroacoustic Measurements of Harmonic Distortion, Difference-Frequency and Intermodulation Distortion

 

Proper Acoustic Response -From the Front Row to the Rear Row-

 

Assisted Resonance

 

A Variable Frequency Limiter/Compressor/Expander

 

Detection of Phase Shifts in Harmonically Related Tones

 

Non-Destructive Conversion of Approved Ear Defenders into Communication Headsets

 

The Practice of Fully Programmable Mixdown and Development of a Third Generation Console

 

Use of the Multi-Track Recorder as a Composing Aid in Electronic Music Systems

 

New Devices for Equalization

 

Development of a Wide Range Universal Frequency Equalizer

 

Spectral Analysis of Heart Sounds in Children

 

Third Octave Series Presentation of Time Constants in Audio Engineering

 

Advance in Turntable and Tone Arm Design

 

The Sound Field in Home Listening Rooms II

 

Distribution of Maximum RMS Spectrum Levels in Live Music Samples

 

New Ceramic Inertial Pickup for String Instruments with Mass-Controlled Frequency Response Adjustments

 

Control of Modulation Noise in Magnetic Recording Tape

 

Localization Effects in the Quadraphonic Sound Field

 

More Signal, Less Noise, Not Always a New Tape

 

The Beryllium Dome Diaphragm--Its Use, Manufacture and Importance in Loudspeaker Systems

 

On the Measurement of Phonograph Cartridges by the Pulse-Train Method, Part II

 

A Technique for Observing Loudspeaker Wave Front Propagation

 

Lacquer Warp, Advance Ball, and Disc Cutter Dynamics

 

Cerebral Hemisphere Dynamics Imaged by a Nondiffusable Radiopharmaceutical

 

360-Degree Symphony Halls and Music Pavilions

 

Manufacture of State of the Art Lacquer Masters