How to not emit event while editing a Form Control value in Angular 2

According to the docs you can do the following:

selectChoice(choice: string) {
  this.autocomplete = [];  // We clean the list of suggestions
  this.term.setValue(choice, { emitEvent: false }); // We write the choice in the term to see it in the input
  this.selected = resp;
}

emitEvent: false will prevent the valueChanges event from being emitted.

If emitEvent is true, this change will cause a valueChanges event on the FormControl to be emitted. This defaults to true (as it falls through to updateValueAndValidity).