Sonic identity and audio branding elements in Spanish radio advertising

The emotional potential of sound is an excellent resource for companies and institutions seeking to test new ways of communicating with their stakeholders through the senses. However, there are still few organizations that include sound as a conveyer of their corporate identity. Audio branding aims to expand the contact points with audiences by incorporating sound elements that facilitate the recognition of the brand's values. This research attempts to understand the use that corporations make of sound as a communication tool and to evaluate its presence, but above all it wants to find out if this use is due to a strategic approach or if it is a specific decision marked by the temporality of advertising campaigns. For this reason, in this paper we have taken the radio as an advertising media. On the one hand, because it is the sound media par excellence. On the other hand, because it is where we can find the most well-known modes of audio branding such as the brand song, the jingle or the sonotype. The sample, composed of 239 inserts from the 3 generalist radio channels with the highest audiences in Spain, reveals that only 21% of items contain an element of audio branding, indicating that this is a field yet to be explored by organizations.

Noise-like discrete signals for asynchronous code division radio systems

This article discusses noise-like discrete signals (pseudo-random sequences) for asynchronous code division systems for radio channels. Asynchrony implies the use of sequences that are statistically uncorrelated for an arbitrary cyclically shifted copy of the signals, i.e. their cross-correlation coefficient for arbitrarily chosen starting points is close to zero. The fundamental theoretical limit for this characteristic is the well-known Welch boundary. In this paper, we compare the correlation properties of various sets (Gold codes, Kasami sequences, etc.) with this fundamental limit. The parameters of different codes are estimated, the corresponding bound is shown and compared with the real correlation characteristics of the codes. For the approximation, the Laurent series expansion and the Puiseau series were used. The asymptotic properties were also estimated. The paper also considers new ensembles of noise-like discrete signals for asynchronous systems. These codes are statistically uncorrelated, asymptotically the square of their cross-correlation for arbitrary starting points tends to the theoretical Welch bound. Moreover, the cardinality (power of the set) of new signal ensembles is much higher than that of Gold codes and Kasami sets. Consequently, the practical use of such noise-like discrete signals will increase the capacity of asynchronous code division systems for radio channels and reduce the cost of communication services. In addition, new sets of spreading signals will be useful for the implementation of the so-called. soft capacity, i.e. when, if necessary, the base station can increase the subscriber capacity with a slight decrease in the quality of service.

ANALYTICAL MODEL OF PACKET TRANSMISSION OF SPEECH AND DATA IN HF RADIO CHANNELS IN A COMPLEX SIGNAL-INTERFERENCE ENVIRONMENT

The author has carried out an analytical simulation of the process of signal formation and processing in the HF channel during packet transmission of speech and data in a complex signal-interference environment. The totality of the result obtained can be the basis for the development of complex mathematical models of HF channels.