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What Is The Shepard’s Tone Illusion?

A Shepard’s Tone, named after Roger Shepard, is a sound consisting of a superposition of sine waves separated by octaves. When played with the bass pitch of the tone moving upward or downward, it is referred to as the Shepard scale. This creates the auditory...

16 Bit vs 24 Bit Audio

The more number combinations you can get in these binary words the more steps of level you can get in amplitude. Bits are with each sample of audio. You can choose any sample of audio and freeze it in time to see the Bit Depth.

What is NTSC / PAL / SECAM?

NTSC / PAL / SECAM  Due to the frequency difference of the AC currents of different regions we end up with these two different video recording formats. NTSC North America, parts of South America, Japan, Taiwan, the Philippines, and South Korea have AC current at...

What Is LTC? (Longitudinal Time Code)

LTC stands for Longitudinal Time Code. This is a audio signal which transmits a series of square waves from a “Master” device. The Master device would be the main device you are running the timecode from, this could be from mixer to camera or separate timecode box to a mixer or camera.

What Out Of Phase Sounds Like…

Below is a little video I shot in Pro Tools and I give you an example of what In Phase and Out Of Phase sounds like. This also ties in with wave interference so I show you the resulting effects of the same clips of me talking “in phase” (aka perfectly matching) versus just a single source.

The Half Power Point and Pan Law

The half power point essentially establishes that a -3dB difference is half the power of any frequency played through a speaker. A mono signal played through 1 speaker is going to be 100% volume, but when played through 2 speakers you have double the speakers so essentially only need half the power from both to perceive no change in level.