Multiple sound reflections between plane panels covered with reflection coefficients.

Plane Reflection of Sound, as Exhibited by the Pinhole Resonator.

if but a single square cm. on each glass face radiates toward m. As there are a number of such square cms., contributing radiation, the coefficient of (3) would be decreased ten or twenty times. One may conclude I think that AO compared with AYr is numerically much in excess. This implies too large a AO, to persist in a room of practically constant temperature, in the summer. It is thus more th...

Reflections about Reflection

In the line of a syntactic treatment of modalities, many proposals have been presented consisting in an extension of a logic calculus with a meta-language for expressing facts about terms and sentences, and with an axiomatization of provability. These proposals differ in the use of the inference rules used to link the object level and meta-level theories; the formulation of these reflection rul...

Reflections on Remote Reflection

The Java programming language provides both reflection and remote method invocation: reflection allows a program to inspect itself and its runtime environment, remote method invocation allows methods to be invoked transparently across a network. Unfortunately, the standard Java implementations of reflection and remote method invoca-tion are incompatible: programmers cannot reflect on a remote a...

Generalized Reflection Coefficients

I consider general reflection coefficients for arbitrary one-dimensional whole line differential or difference operators of order 2. These reflection coefficients are semicontinuous functions of the operator: their absolute value can only go down when limits are taken. This implies a corresponding semicontinuity result for the absolutely continuous spectrum, which applies to a very large class ...

Personal Sound Zone Reproduction with Room Reflections