Echo One

Echo

In audio signal processing and acoustics, an echo is a reflection of sound that arrives at the listener with a delay after the direct sound. The delay is directly proportional to the distance of the reflecting surface from the source and the listener. Typical examples are the echo produced by the bottom of a well, a building, or the walls of enclosed and empty rooms.

1

1 is a number, numeral, and grapheme. It is the first and smallest positive integer of the infinite sequence of natural numbers. This fundamental property has led to its unique uses in other fields, ranging from science to sports, where it commonly denotes the first, leading, or top thing in a group. 1 is the unit of counting or measurement, and represents a single thing. The representation of 1 evolved from ancient Sumerian and Babylonian symbols to the modern Arabic numeral. Linguistically, in English, "one" is a determiner for singular nouns and a gender-neutral pronoun.

echo

Noun

1. Alternative letter-case form of Echo of the ICAO/NATO radiotelephony alphabet.

Noun

1. A reflected sound that is heard again by its initial observer.
2. An utterance repeating what has just been said.

one

Noun

1. NATO & ICAO radiotelephony clear code (spelling-alphabet name) for the digit 1.

Symbol

1. ISO 639-3 language code for Oneida.